88389865 has 4 divisors (see below), whose sum is σ = 106067844. Its totient is φ = 70711888.

The previous prime is 88389853. The next prime is 88389877. The reversal of 88389865 is 56898388.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (88389853) and next prime (88389877).

It can be written as a sum of positive squares in 2 ways, for example, as 15389929 + 72999936 = 3923^2 + 8544^2 .

It is a cyclic number.

It is not a de Polignac number, because 88389865 - 2⁷ = 88389737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8838982 + ... + 8838991.

It is an arithmetic number, because the mean of its divisors is an integer number (26516961).

Almost surely, 2^88389865 is an apocalyptic number.

It is an amenable number.

88389865 is a deficient number, since it is larger than the sum of its proper divisors (17677979).

88389865 is a wasteful number, since it uses less digits than its factorization.

88389865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17677978.

The product of its digits is 3317760, while the sum is 55.

The square root of 88389865 is about 9401.5884296219. The cubic root of 88389865 is about 445.4519080467.

The spelling of 88389865 in words is "eighty-eight million, three hundred eighty-nine thousand, eight hundred sixty-five".