79444129 has 2 divisors, whose sum is σ = 79444130. Its totient is φ = 79444128.

The previous prime is 79444121. The next prime is 79444181. The reversal of 79444129 is 92144497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74390625 + 5053504 = 8625^2 + 2248^2 .

It is a cyclic number.

It is not a de Polignac number, because 79444129 - 2³ = 79444121 is a prime.

It is a super-2 number, since 2×79444129² = 12622739265137282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79444091 and 79444100.

It is not a weakly prime, because it can be changed into another prime (79444121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39722064 + 39722065.

It is an arithmetic number, because the mean of its divisors is an integer number (39722065).

Almost surely, 2^79444129 is an apocalyptic number.

It is an amenable number.

79444129 is a deficient number, since it is larger than the sum of its proper divisors (1).

79444129 is an equidigital number, since it uses as much as digits as its factorization.

79444129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 79444129 is about 8913.1436092997. The cubic root of 79444129 is about 429.8866277641.

The spelling of 79444129 in words is "seventy-nine million, four hundred forty-four thousand, one hundred twenty-nine".