88389864 has 24 divisors (see below), whose sum is σ = 239389410. Its totient is φ = 29463264.

The previous prime is 88389853. The next prime is 88389877. The reversal of 88389864 is 46898388.

It can be written as a sum of positive squares in only one way, i.e., 87048900 + 1340964 = 9330^2 + 1158^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 88389864.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 613747 + ... + 613890.

Almost surely, 2^88389864 is an apocalyptic number.

It is an amenable number.

88389864 is an abundant number, since it is smaller than the sum of its proper divisors (150999546).

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

88389864 is a wasteful number, since it uses less digits than its factorization.

88389864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227649 (or 1227642 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The square root of 88389864 is about 9401.5883764394. The cubic root of 88389864 is about 445.4519063668.

It can be divided in two parts, 88389 and 864, that added together give a triangular number (89253 = T₄₂₂).

The spelling of 88389864 in words is "eighty-eight million, three hundred eighty-nine thousand, eight hundred sixty-four".