84408404 has 6 divisors (see below), whose sum is σ = 147714714. Its totient is φ = 42204200.

The previous prime is 84408377. The next prime is 84408407. The reversal of 84408404 is 40480448.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 83685904 + 722500 = 9148^2 + 850^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84408407) 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 as a sum of consecutive naturals, namely, 10551047 + ... + 10551054.

It is an arithmetic number, because the mean of its divisors is an integer number (24619119).

Almost surely, 2^84408404 is an apocalyptic number.

It is an amenable number.

84408404 is a deficient number, since it is larger than the sum of its proper divisors (63306310).

84408404 is a wasteful number, since it uses less digits than its factorization.

84408404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21102105 (or 21102103 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 84408404 is about 9187.4046389609. The cubic root of 84408404 is about 438.6605339181.

The spelling of 84408404 in words is "eighty-four million, four hundred eight thousand, four hundred four".