79800740 has 12 divisors (see below), whose sum is σ = 167581596. Its totient is φ = 31920288.

The previous prime is 79800697. The next prime is 79800751. The reversal of 79800740 is 4700897.

It can be written as a sum of positive squares in 2 ways, for example, as 23580736 + 56220004 = 4856^2 + 7498^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 79800740.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1994999 + ... + 1995038.

It is an arithmetic number, because the mean of its divisors is an integer number (13965133).

Almost surely, 2^79800740 is an apocalyptic number.

It is an amenable number.

79800740 is an abundant number, since it is smaller than the sum of its proper divisors (87780856).

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

79800740 is a wasteful number, since it uses less digits than its factorization.

79800740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990046 (or 3990044 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 79800740 is about 8933.1259926187. The cubic root of 79800740 is about 430.5288966976.

The spelling of 79800740 in words is "seventy-nine million, eight hundred thousand, seven hundred forty".