84400928 has 12 divisors (see below), whose sum is σ = 166164390. Its totient is φ = 42200448.

The previous prime is 84400909. The next prime is 84400931. The reversal of 84400928 is 82900448.

It can be written as a sum of positive squares in only one way, i.e., 54937744 + 29463184 = 7412^2 + 5428^2 .

It is a super-2 number, since 2×84400928² = 14247033294522368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1318733 + ... + 1318796.

Almost surely, 2^84400928 is an apocalyptic number.

It is an amenable number.

84400928 is a deficient number, since it is larger than the sum of its proper divisors (81763462).

84400928 is a wasteful number, since it uses less digits than its factorization.

84400928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637539 (or 2637531 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 84400928 is about 9186.9977685858. The cubic root of 84400928 is about 438.6475829053.

The spelling of 84400928 in words is "eighty-four million, four hundred thousand, nine hundred twenty-eight".