915115089 has 32 divisors (see below), whose sum is σ = 1420360704. Its totient is φ = 513293760.

The previous prime is 915115087. The next prime is 915115093. The reversal of 915115089 is 980511519.

It is not a de Polignac number, because 915115089 - 2¹ = 915115087 is a prime.

It is a super-2 number, since 2×915115089² = 1674871252230955842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (915115087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 282499 + ... + 285719.

It is an arithmetic number, because the mean of its divisors is an integer number (44386272).

Almost surely, 2^915115089 is an apocalyptic number.

It is an amenable number.

915115089 is a deficient number, since it is larger than the sum of its proper divisors (505245615).

915115089 is a wasteful number, since it uses less digits than its factorization.

915115089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3477.

The product of its (nonzero) digits is 16200, while the sum is 39.

The square root of 915115089 is about 30250.8692271809. The cubic root of 915115089 is about 970.8643901543.

The spelling of 915115089 in words is "nine hundred fifteen million, one hundred fifteen thousand, eighty-nine".