79087940 has 12 divisors (see below), whose sum is σ = 166084716. Its totient is φ = 31635168.

The previous prime is 79087919. The next prime is 79087993. The reversal of 79087940 is 4978097.

It can be written as a sum of positive squares in 2 ways, for example, as 59938564 + 19149376 = 7742^2 + 4376^2 .

It is a junction number, because it is equal to n+sod(n) for n = 79087891 and 79087900.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1977179 + ... + 1977218.

It is an arithmetic number, because the mean of its divisors is an integer number (13840393).

Almost surely, 2^79087940 is an apocalyptic number.

It is an amenable number.

79087940 is an abundant number, since it is smaller than the sum of its proper divisors (86996776).

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

79087940 is a wasteful number, since it uses less digits than its factorization.

79087940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3954406 (or 3954404 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 79087940 is about 8893.1400528722. The cubic root of 79087940 is about 429.2431973782.

The spelling of 79087940 in words is "seventy-nine million, eighty-seven thousand, nine hundred forty".