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89987651 = 136922127
BaseRepresentation
bin1010101110100…
…01101001000011
320021022211211222
411113101221003
5141014101101
612532425255
72141611445
oct527215103
9207284758
1089987651
1146883066
122617822b
1315849440
14bd46495
157d7801b
hex55d1a43

89987651 has 4 divisors (see below), whose sum is σ = 96909792. Its totient is φ = 83065512.

The previous prime is 89987621. The next prime is 89987659. The reversal of 89987651 is 15678998.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89987651 - 214 = 89971267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89987593 and 89987602.

It is not an unprimeable number, because it can be changed into a prime (89987659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3461051 + ... + 3461076.

It is an arithmetic number, because the mean of its divisors is an integer number (24227448).

Almost surely, 289987651 is an apocalyptic number.

89987651 is a deficient number, since it is larger than the sum of its proper divisors (6922141).

89987651 is a wasteful number, since it uses less digits than its factorization.

89987651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6922140.

The product of its digits is 1088640, while the sum is 53.

The square root of 89987651 is about 9486.1821087306. The cubic root of 89987651 is about 448.1199771007.

The spelling of 89987651 in words is "eighty-nine million, nine hundred eighty-seven thousand, six hundred fifty-one".

Divisors: 1 13 6922127 89987651