79457340 has 48 divisors (see below), whose sum is σ = 229662720. Its totient is φ = 20504640.

The previous prime is 79457321. The next prime is 79457347. The reversal of 79457340 is 4375497.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79457347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19500 + ... + 23219.

It is an arithmetic number, because the mean of its divisors is an integer number (4784640).

Almost surely, 2^79457340 is an apocalyptic number.

It is an amenable number.

79457340 is an abundant number, since it is smaller than the sum of its proper divisors (150205380).

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

79457340 is a wasteful number, since it uses less digits than its factorization.

79457340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42762 (or 42760 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 79457340 is about 8913.8846750449. The cubic root of 79457340 is about 429.9104554844.

It can be divided in two parts, 79457 and 340, that added together give a palindrome (79797).

The spelling of 79457340 in words is "seventy-nine million, four hundred fifty-seven thousand, three hundred forty".