79619401 has 2 divisors, whose sum is σ = 79619402. Its totient is φ = 79619400.

The previous prime is 79619389. The next prime is 79619429. The reversal of 79619401 is 10491697.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78765625 + 853776 = 8875^2 + 924^2 .

It is a cyclic number.

It is not a de Polignac number, because 79619401 - 2⁵ = 79619369 is a prime.

It is not a weakly prime, because it can be changed into another prime (79619201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39809700 + 39809701.

It is an arithmetic number, because the mean of its divisors is an integer number (39809701).

Almost surely, 2^79619401 is an apocalyptic number.

It is an amenable number.

79619401 is a deficient number, since it is larger than the sum of its proper divisors (1).

79619401 is an equidigital number, since it uses as much as digits as its factorization.

79619401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 79619401 is about 8922.9704134890. The cubic root of 79619401 is about 430.2025384416.

The spelling of 79619401 in words is "seventy-nine million, six hundred nineteen thousand, four hundred one".