79401859 has 2 divisors, whose sum is σ = 79401860. Its totient is φ = 79401858.

The previous prime is 79401827. The next prime is 79401869. The reversal of 79401859 is 95810497.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79401859 - 2⁵ = 79401827 is a prime.

It is not a weakly prime, because it can be changed into another prime (79401869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39700929 + 39700930.

It is an arithmetic number, because the mean of its divisors is an integer number (39700930).

Almost surely, 2^79401859 is an apocalyptic number.

79401859 is a deficient number, since it is larger than the sum of its proper divisors (1).

79401859 is an equidigital number, since it uses as much as digits as its factorization.

79401859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 79401859 is about 8910.7720765375. The cubic root of 79401859 is about 429.8103706857.

The spelling of 79401859 in words is "seventy-nine million, four hundred one thousand, eight hundred fifty-nine".