79126457 has 2 divisors, whose sum is σ = 79126458. Its totient is φ = 79126456.

The previous prime is 79126451. The next prime is 79126499. The reversal of 79126457 is 75462197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69039481 + 10086976 = 8309^2 + 3176^2 .

It is a cyclic number.

It is not a de Polignac number, because 79126457 - 2⁴ = 79126441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79126451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39563228 + 39563229.

It is an arithmetic number, because the mean of its divisors is an integer number (39563229).

Almost surely, 2^79126457 is an apocalyptic number.

It is an amenable number.

79126457 is a deficient number, since it is larger than the sum of its proper divisors (1).

79126457 is an equidigital number, since it uses as much as digits as its factorization.

79126457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 79126457 is about 8895.3053348381. The cubic root of 79126457 is about 429.3128686707.

The spelling of 79126457 in words is "seventy-nine million, one hundred twenty-six thousand, four hundred fifty-seven".