79870400 has 42 divisors (see below), whose sum is σ = 196535040. Its totient is φ = 31947520.

The previous prime is 79870387. The next prime is 79870409. The reversal of 79870400 is 407897.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79870409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23360 + ... + 26559.

Almost surely, 2^79870400 is an apocalyptic number.

It is an amenable number.

79870400 is an abundant number, since it is smaller than the sum of its proper divisors (116664640).

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

79870400 is a wasteful number, since it uses less digits than its factorization.

79870400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49941 (or 49926 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 79870400 is about 8937.0241132046. The cubic root of 79870400 is about 430.6541333000.

The spelling of 79870400 in words is "seventy-nine million, eight hundred seventy thousand, four hundred".