85988388 has 12 divisors (see below), whose sum is σ = 200639600. Its totient is φ = 28662792.

The previous prime is 85988381. The next prime is 85988411. The reversal of 85988388 is 88388958.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (85988381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3582838 + ... + 3582861.

Almost surely, 2^85988388 is an apocalyptic number.

It is an amenable number.

85988388 is an abundant number, since it is smaller than the sum of its proper divisors (114651212).

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

85988388 is a wasteful number, since it uses less digits than its factorization.

85988388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7165706 (or 7165704 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 57.

The square root of 85988388 is about 9272.9923972793. The cubic root of 85988388 is about 441.3806289060.

The spelling of 85988388 in words is "eighty-five million, nine hundred eighty-eight thousand, three hundred eighty-eight".