79340400 has 90 divisors (see below), whose sum is σ = 275345720. Its totient is φ = 21156480.

The previous prime is 79340389. The next prime is 79340407. The reversal of 79340400 is 404397.

It is a tau number, because it is divible by the number of its divisors (90).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79340407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7420 + ... + 14619.

Almost surely, 2^79340400 is an apocalyptic number.

It is an amenable number.

79340400 is an abundant number, since it is smaller than the sum of its proper divisors (196005320).

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

79340400 is a wasteful number, since it uses less digits than its factorization.

79340400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22063 (or 22049 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 79340400 is about 8907.3228301213. The cubic root of 79340400 is about 429.6994474474.

Adding to 79340400 its reverse (404397), we get a palindrome (79744797).

The spelling of 79340400 in words is "seventy-nine million, three hundred forty thousand, four hundred".