6404240079 has 8 divisors (see below), whose sum is σ = 9487763120. Its totient is φ = 4269493368.

The previous prime is 6404240071. The next prime is 6404240093. The reversal of 6404240079 is 9700424046.

6404240079 is a `hidden beast` number, since 6 + 404 + 240 + 0 + 7 + 9 = 666.

6404240079 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6404240079 - 2³ = 6404240071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6404240071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118597012 + ... + 118597065.

It is an arithmetic number, because the mean of its divisors is an integer number (1185970390).

Almost surely, 2^6404240079 is an apocalyptic number.

6404240079 is a deficient number, since it is larger than the sum of its proper divisors (3083523041).

6404240079 is a wasteful number, since it uses less digits than its factorization.

6404240079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237194086 (or 237194080 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 6404240079 is about 80026.4961059773. The cubic root of 6404240079 is about 1857.0454575848.

The spelling of 6404240079 in words is "six billion, four hundred four million, two hundred forty thousand, seventy-nine".