89813915 has 8 divisors (see below), whose sum is σ = 109141440. Its totient is φ = 70941312.

The previous prime is 89813881. The next prime is 89813917. The reversal of 89813915 is 51931898.

It is a happy number.

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 89813915 - 2²⁴ = 73036699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89813917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113294 + ... + 114083.

It is an arithmetic number, because the mean of its divisors is an integer number (13642680).

Almost surely, 2^89813915 is an apocalyptic number.

89813915 is a deficient number, since it is larger than the sum of its proper divisors (19327525).

89813915 is a wasteful number, since it uses less digits than its factorization.

89813915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227461.

The product of its digits is 77760, while the sum is 44.

The square root of 89813915 is about 9477.0203650726. The cubic root of 89813915 is about 447.8314014684.

The spelling of 89813915 in words is "eighty-nine million, eight hundred thirteen thousand, nine hundred fifteen".