79099040 has 24 divisors (see below), whose sum is σ = 186871860. Its totient is φ = 31639552.

The previous prime is 79099019. The next prime is 79099051. The reversal of 79099040 is 4099097.

It can be written as a sum of positive squares in 2 ways, for example, as 78074896 + 1024144 = 8836^2 + 1012^2 .

It is a junction number, because it is equal to n+sod(n) for n = 79098985 and 79099003.

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 3 ways as a sum of consecutive naturals, for example, 247025 + ... + 247344.

Almost surely, 2^79099040 is an apocalyptic number.

It is an amenable number.

79099040 is an abundant number, since it is smaller than the sum of its proper divisors (107772820).

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

79099040 is a wasteful number, since it uses less digits than its factorization.

79099040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494384 (or 494376 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 79099040 is about 8893.7641075081. The cubic root of 79099040 is about 429.2632778802.

The spelling of 79099040 in words is "seventy-nine million, ninety-nine thousand, forty".