77400404 has 12 divisors (see below), whose sum is σ = 136518144. Its totient is φ = 38395224.

The previous prime is 77400341. The next prime is 77400409. The reversal of 77400404 is 40400477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77400409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75674 + ... + 76689.

It is an arithmetic number, because the mean of its divisors is an integer number (11376512).

Almost surely, 2^77400404 is an apocalyptic number.

It is an amenable number.

77400404 is a deficient number, since it is larger than the sum of its proper divisors (59117740).

77400404 is a wasteful number, since it uses less digits than its factorization.

77400404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152494 (or 152492 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 77400404 is about 8797.7499396152. The cubic root of 77400404 is about 426.1682349622.

The spelling of 77400404 in words is "seventy-seven million, four hundred thousand, four hundred four".