84400804 has 12 divisors (see below), whose sum is σ = 150488604. Its totient is φ = 41404064.

The previous prime is 84400781. The next prime is 84400807. The reversal of 84400804 is 40800448.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 71368704 + 13032100 = 8448^2 + 3610^2 .

It is not an unprimeable number, because it can be changed into a prime (84400807) 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 3 ways as a sum of consecutive naturals, for example, 198847 + ... + 199270.

It is an arithmetic number, because the mean of its divisors is an integer number (12540717).

Almost surely, 2^84400804 is an apocalyptic number.

It is an amenable number.

84400804 is a deficient number, since it is larger than the sum of its proper divisors (66087800).

84400804 is a wasteful number, since it uses less digits than its factorization.

84400804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398174 (or 398172 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 84400804 is about 9186.9910199151. The cubic root of 84400804 is about 438.6473680880.

The spelling of 84400804 in words is "eighty-four million, four hundred thousand, eight hundred four".