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89456641 = 4312716381
BaseRepresentation
bin1010101010100…
…00000000000001
320020022212102221
411111100000001
5140400103031
612513211041
72134240351
oct525200001
9206285387
1089456641
114655010a
1225b60a81
13156c1831
14bc48b61
157cc0a11
hex5550001

89456641 has 8 divisors (see below), whose sum is σ = 92263424. Its totient is φ = 86682960.

The previous prime is 89456599. The next prime is 89456671. The reversal of 89456641 is 14665498.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 5-Lehmer number, since φ(89456641) divides (89456641-1)5.

It is a cyclic number.

It is not a de Polignac number, because 89456641 - 27 = 89456513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a deceptive number, since it divides R89456640.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89456671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2730 + ... + 13651.

It is an arithmetic number, because the mean of its divisors is an integer number (11532928).

It is a Proth number, since it is equal to 1365 ⋅ 216 + 1 and 1365 < 216.

Almost surely, 289456641 is an apocalyptic number.

89456641 is the 5461-st octagonal number.

It is an amenable number.

89456641 is a deficient number, since it is larger than the sum of its proper divisors (2806783).

89456641 is a wasteful number, since it uses less digits than its factorization.

89456641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16551.

The product of its digits is 207360, while the sum is 43.

The square root of 89456641 is about 9458.1520922430. The cubic root of 89456641 is about 447.2367974629.

The spelling of 89456641 in words is "eighty-nine million, four hundred fifty-six thousand, six hundred forty-one".

Divisors: 1 43 127 5461 16381 704383 2080387 89456641