89872913 has 4 divisors (see below), whose sum is σ = 96786228. Its totient is φ = 82959600.

The previous prime is 89872903. The next prime is 89872961. The reversal of 89872913 is 31927898.

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

It can be written as a sum of positive squares in 2 ways, for example, as 53246209 + 36626704 = 7297^2 + 6052^2 .

It is a cyclic number.

It is not a de Polignac number, because 89872913 - 2¹⁰ = 89871889 is a prime.

It is a super-2 number, since 2×89872913² = 16154280982211138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89872903) 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, 3456638 + ... + 3456663.

It is an arithmetic number, because the mean of its divisors is an integer number (24196557).

Almost surely, 2^89872913 is an apocalyptic number.

It is an amenable number.

89872913 is a deficient number, since it is larger than the sum of its proper divisors (6913315).

89872913 is a wasteful number, since it uses less digits than its factorization.

89872913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6913314.

The product of its digits is 217728, while the sum is 47.

The square root of 89872913 is about 9480.1325412676. The cubic root of 89872913 is about 447.9294388897.

The spelling of 89872913 in words is "eighty-nine million, eight hundred seventy-two thousand, nine hundred thirteen".