79040805 has 32 divisors (see below), whose sum is σ = 132105600. Its totient is φ = 40303872.

The previous prime is 79040777. The next prime is 79040807. The reversal of 79040805 is 50804097.

It is not a de Polignac number, because 79040805 - 2²² = 74846501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79040807) 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 31 ways as a sum of consecutive naturals, for example, 46582 + ... + 48248.

It is an arithmetic number, because the mean of its divisors is an integer number (4128300).

Almost surely, 2^79040805 is an apocalyptic number.

It is an amenable number.

79040805 is a deficient number, since it is larger than the sum of its proper divisors (53064795).

79040805 is a wasteful number, since it uses less digits than its factorization.

79040805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 79040805 is about 8890.4895815697. The cubic root of 79040805 is about 429.1579066718.

The spelling of 79040805 in words is "seventy-nine million, forty thousand, eight hundred five".