89910913 has 4 divisors (see below), whose sum is σ = 89931268. Its totient is φ = 89890560.

The previous prime is 89910911. The next prime is 89910941. The reversal of 89910913 is 31901998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31901998 = 2 ⋅15950999.

It can be written as a sum of positive squares in 2 ways, for example, as 67519089 + 22391824 = 8217^2 + 4732^2 .

It is a cyclic number.

It is not a de Polignac number, because 89910913 - 2¹ = 89910911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89910911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456 + ... + 13417.

It is an arithmetic number, because the mean of its divisors is an integer number (22482817).

Almost surely, 2^89910913 is an apocalyptic number.

It is an amenable number.

89910913 is a deficient number, since it is larger than the sum of its proper divisors (20355).

89910913 is a wasteful number, since it uses less digits than its factorization.

89910913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20354.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 89910913 is about 9482.1365208480. The cubic root of 89910913 is about 447.9925610611.

The spelling of 89910913 in words is "eighty-nine million, nine hundred ten thousand, nine hundred thirteen".