79417940 has 48 divisors (see below), whose sum is σ = 191261952. Its totient is φ = 27134976.

The previous prime is 79417889. The next prime is 79417957. The reversal of 79417940 is 4971497.

It is a happy number.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48617 + ... + 50223.

It is an arithmetic number, because the mean of its divisors is an integer number (3984624).

Almost surely, 2^79417940 is an apocalyptic number.

79417940 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

79417940 is an abundant number, since it is smaller than the sum of its proper divisors (111844012).

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

79417940 is a wasteful number, since it uses less digits than its factorization.

79417940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976 (or 1974 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 79417940 is about 8911.6743656846. The cubic root of 79417940 is about 429.8393847588.

The spelling of 79417940 in words is "seventy-nine million, four hundred seventeen thousand, nine hundred forty".