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89504405 = 5171052993
BaseRepresentation
bin1010101010110…
…11101010010101
320020102021221222
411111123222111
5140403120110
612514220125
72134526534
oct525335225
9206367858
1089504405
1146582a91
1225b84645
131570a4b3
14bc5c31b
157ccec55
hex555ba95

89504405 has 8 divisors (see below), whose sum is σ = 113723352. Its totient is φ = 67391488.

The previous prime is 89504321. The next prime is 89504413. The reversal of 89504405 is 50440598.

It can be written as a sum of positive squares in 4 ways, for example, as 19061956 + 70442449 = 4366^2 + 8393^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 89504405 - 212 = 89500309 is a prime.

It is a super-2 number, since 2×895044052 = 16022077028808050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526412 + ... + 526581.

It is an arithmetic number, because the mean of its divisors is an integer number (14215419).

Almost surely, 289504405 is an apocalyptic number.

89504405 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

89504405 is a deficient number, since it is larger than the sum of its proper divisors (24218947).

89504405 is a wasteful number, since it uses less digits than its factorization.

89504405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053015.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 89504405 is about 9460.6767728318. The cubic root of 89504405 is about 447.3163817074.

The spelling of 89504405 in words is "eighty-nine million, five hundred four thousand, four hundred five".

Divisors: 1 5 17 85 1052993 5264965 17900881 89504405