79451438 has 16 divisors (see below), whose sum is σ = 137659824. Its totient is φ = 33989760.

The previous prime is 79451431. The next prime is 79451441. The reversal of 79451438 is 83415497.

It is a junction number, because it is equal to n+sod(n) for n = 79451395 and 79451404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79451431) 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, 105845 + ... + 106592.

It is an arithmetic number, because the mean of its divisors is an integer number (8603739).

Almost surely, 2^79451438 is an apocalyptic number.

79451438 is a deficient number, since it is larger than the sum of its proper divisors (58208386).

79451438 is a wasteful number, since it uses less digits than its factorization.

79451438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212467.

The product of its digits is 120960, while the sum is 41.

The square root of 79451438 is about 8913.5536123367. The cubic root of 79451438 is about 429.8998108025.

The spelling of 79451438 in words is "seventy-nine million, four hundred fifty-one thousand, four hundred thirty-eight".