79899000 has 64 divisors (see below), whose sum is σ = 249294240. Its totient is φ = 21305600.

The previous prime is 79898983. The next prime is 79899139. The reversal of 79899000 is 99897.

It is a happy number.

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, 10317 + ... + 16316.

Almost surely, 2^79899000 is an apocalyptic number.

It is an amenable number.

79899000 is an abundant number, since it is smaller than the sum of its proper divisors (169395240).

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

79899000 is a wasteful number, since it uses less digits than its factorization.

79899000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26657 (or 26643 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 79899000 is about 8938.6240551888. The cubic root of 79899000 is about 430.7055300560.

The spelling of 79899000 in words is "seventy-nine million, eight hundred ninety-nine thousand".