79436431 has 2 divisors, whose sum is σ = 79436432. Its totient is φ = 79436430.

The previous prime is 79436417. The next prime is 79436443. The reversal of 79436431 is 13463497.

It is a strong prime.

It is an emirp because it is prime and its reverse (13463497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79436431 - 2⁷ = 79436303 is a prime.

It is a super-2 number, since 2×79436431² = 12620293140035522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79436491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39718215 + 39718216.

It is an arithmetic number, because the mean of its divisors is an integer number (39718216).

Almost surely, 2^79436431 is an apocalyptic number.

79436431 is a deficient number, since it is larger than the sum of its proper divisors (1).

79436431 is an equidigital number, since it uses as much as digits as its factorization.

79436431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 37.

The square root of 79436431 is about 8912.7117646651. The cubic root of 79436431 is about 429.8727422230.

The spelling of 79436431 in words is "seventy-nine million, four hundred thirty-six thousand, four hundred thirty-one".