79440396 has 48 divisors (see below), whose sum is σ = 219152640. Its totient is φ = 21913920.

The previous prime is 79440391. The next prime is 79440401. The reversal of 79440396 is 69304497.

It is an interprime number because it is at equal distance from previous prime (79440391) and next prime (79440401).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (79440391) 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 15 ways as a sum of consecutive naturals, for example, 13870 + ... + 18741.

It is an arithmetic number, because the mean of its divisors is an integer number (4565680).

Almost surely, 2^79440396 is an apocalyptic number.

It is an amenable number.

79440396 is an abundant number, since it is smaller than the sum of its proper divisors (139712244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79440396 is a wasteful number, since it uses less digits than its factorization.

79440396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32654 (or 32652 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 79440396 is about 8912.9341969971. The cubic root of 79440396 is about 429.8798943447.

The spelling of 79440396 in words is "seventy-nine million, four hundred forty thousand, three hundred ninety-six".