79997000 has 32 divisors (see below), whose sum is σ = 187195320. Its totient is φ = 31998400.

The previous prime is 79996999. The next prime is 79997003. The reversal of 79997000 is 79997.

It can be written as a sum of positive squares in 4 ways, for example, as 8797156 + 71199844 = 2966^2 + 8438^2 .

It is not an unprimeable number, because it can be changed into a prime (79997003) 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, 38999 + ... + 40998.

Almost surely, 2^79997000 is an apocalyptic number.

It is an amenable number.

79997000 is an abundant number, since it is smaller than the sum of its proper divisors (107198320).

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

79997000 is a wasteful number, since it uses less digits than its factorization.

79997000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80018 (or 80004 counting only the distinct ones).

The product of its (nonzero) digits is 35721, while the sum is 41.

The square root of 79997000 is about 8944.1042033286. The cubic root of 79997000 is about 430.8815518523.

79997000 divided by its reverse (79997) gives a cube (1000 = 10³).

The spelling of 79997000 in words is "seventy-nine million, nine hundred ninety-seven thousand".