79129493 has 6 divisors (see below), whose sum is σ = 79848834. Its totient is φ = 78416576.

The previous prime is 79129489. The next prime is 79129511. The reversal of 79129493 is 39492197.

It can be written as a sum of positive squares in 3 ways, for example, as 7524049 + 71605444 = 2743^2 + 8462^2 .

It is not a de Polignac number, because 79129493 - 2² = 79129489 is a prime.

It is a super-2 number, since 2×79129493² = 12522953324874098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79122493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9671 + ... + 15867.

It is an arithmetic number, because the mean of its divisors is an integer number (13308139).

Almost surely, 2^79129493 is an apocalyptic number.

It is an amenable number.

79129493 is a deficient number, since it is larger than the sum of its proper divisors (719341).

79129493 is an equidigital number, since it uses as much as digits as its factorization.

79129493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423 (or 6310 counting only the distinct ones).

The product of its digits is 122472, while the sum is 44.

The square root of 79129493 is about 8895.4759850162. The cubic root of 79129493 is about 429.3183593635.

The spelling of 79129493 in words is "seventy-nine million, one hundred twenty-nine thousand, four hundred ninety-three".