88969815 has 24 divisors (see below), whose sum is σ = 168234768. Its totient is φ = 43136640.

The previous prime is 88969813. The next prime is 88969831. The reversal of 88969815 is 51896988.

It is not a de Polignac number, because 88969815 - 2¹ = 88969813 is a prime.

It is a super-2 number, since 2×88969815² = 15831255962268450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88969813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89374 + ... + 90363.

It is an arithmetic number, because the mean of its divisors is an integer number (7009782).

Almost surely, 2^88969815 is an apocalyptic number.

88969815 is a deficient number, since it is larger than the sum of its proper divisors (79264953).

88969815 is a wasteful number, since it uses less digits than its factorization.

88969815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179759 (or 179756 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 54.

The square root of 88969815 is about 9432.3811945871. The cubic root of 88969815 is about 446.4240288208.

The spelling of 88969815 in words is "eighty-eight million, nine hundred sixty-nine thousand, eight hundred fifteen".