79420992 has 56 divisors (see below), whose sum is σ = 240158016. Its totient is φ = 22691328.

The previous prime is 79420987. The next prime is 79420993. The reversal of 79420992 is 29902497.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (79420993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28203 + ... + 30890.

It is an arithmetic number, because the mean of its divisors is an integer number (4288536).

Almost surely, 2^79420992 is an apocalyptic number.

It is an amenable number.

79420992 is an abundant number, since it is smaller than the sum of its proper divisors (160737024).

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

79420992 is a wasteful number, since it uses less digits than its factorization.

79420992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59115 (or 59105 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 79420992 is about 8911.8456000988. The cubic root of 79420992 is about 429.8448908740.

The spelling of 79420992 in words is "seventy-nine million, four hundred twenty thousand, nine hundred ninety-two".