79154441 has 2 divisors, whose sum is σ = 79154442. Its totient is φ = 79154440.

The previous prime is 79154429. The next prime is 79154447. The reversal of 79154441 is 14445197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79138816 + 15625 = 8896^2 + 125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79154441 is a prime.

It is equal to p_4622975 and since 79154441 and 4622975 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (79154447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39577220 + 39577221.

It is an arithmetic number, because the mean of its divisors is an integer number (39577221).

Almost surely, 2^79154441 is an apocalyptic number.

It is an amenable number.

79154441 is a deficient number, since it is larger than the sum of its proper divisors (1).

79154441 is an equidigital number, since it uses as much as digits as its factorization.

79154441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 79154441 is about 8896.8781603437. The cubic root of 79154441 is about 429.3634732167.

The spelling of 79154441 in words is "seventy-nine million, one hundred fifty-four thousand, four hundred forty-one".