79091240 has 32 divisors (see below), whose sum is σ = 178817760. Its totient is φ = 31483200.

The previous prime is 79091209. The next prime is 79091263. The reversal of 79091240 is 4219097.

79091240 = T₃₈₉ + T₃₉₀ + ... + T₈₁₀.

It is a junction number, because it is equal to n+sod(n) for n = 79091197 and 79091206.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3755 + ... + 13125.

It is an arithmetic number, because the mean of its divisors is an integer number (5588055).

Almost surely, 2^79091240 is an apocalyptic number.

It is an amenable number.

79091240 is an abundant number, since it is smaller than the sum of its proper divisors (99726520).

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

79091240 is a wasteful number, since it uses less digits than its factorization.

79091240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9593 (or 9589 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 79091240 is about 8893.3255872030. The cubic root of 79091240 is about 429.2491674534.

The spelling of 79091240 in words is "seventy-nine million, ninety-one thousand, two hundred forty".