79493557 has 16 divisors (see below), whose sum is σ = 94796352. Its totient is φ = 65704320.

The previous prime is 79493527. The next prime is 79493563. The reversal of 79493557 is 75539497.

It is a de Polignac number, because none of the positive numbers 2^k-79493557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79493557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79493507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5433 + ... + 13729.

It is an arithmetic number, because the mean of its divisors is an integer number (5924772).

Almost surely, 2^79493557 is an apocalyptic number.

It is an amenable number.

79493557 is a deficient number, since it is larger than the sum of its proper divisors (15302795).

79493557 is a wasteful number, since it uses less digits than its factorization.

79493557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8388.

The product of its digits is 1190700, while the sum is 49.

The square root of 79493557 is about 8915.9159372439. The cubic root of 79493557 is about 429.9757639125.

The spelling of 79493557 in words is "seventy-nine million, four hundred ninety-three thousand, five hundred fifty-seven".