88709985 has 160 divisors (see below), whose sum is σ = 204906240. Its totient is φ = 35707392.

The previous prime is 88709983. The next prime is 88710023. The reversal of 88709985 is 58990788.

It is not a de Polignac number, because 88709985 - 2¹ = 88709983 is a prime.

It is a super-2 number, since 2×88709985² = 15738922877400450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (88709983) 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 159 ways as a sum of consecutive naturals, for example, 1068754 + ... + 1068836.

It is an arithmetic number, because the mean of its divisors is an integer number (1280664).

Almost surely, 2^88709985 is an apocalyptic number.

It is an amenable number.

88709985 is an abundant number, since it is smaller than the sum of its proper divisors (116196255).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

88709985 is a wasteful number, since it uses less digits than its factorization.

88709985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The square root of 88709985 is about 9418.5978255789. The cubic root of 88709985 is about 445.9890218966.

The spelling of 88709985 in words is "eighty-eight million, seven hundred nine thousand, nine hundred eighty-five".