79431371 has 2 divisors, whose sum is σ = 79431372. Its totient is φ = 79431370.

The previous prime is 79431347. The next prime is 79431389. The reversal of 79431371 is 17313497.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79431371 is a prime.

It is not a weakly prime, because it can be changed into another prime (79431301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39715685 + 39715686.

It is an arithmetic number, because the mean of its divisors is an integer number (39715686).

Almost surely, 2^79431371 is an apocalyptic number.

79431371 is a deficient number, since it is larger than the sum of its proper divisors (1).

79431371 is an equidigital number, since it uses as much as digits as its factorization.

79431371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 35.

The square root of 79431371 is about 8912.4278959215. The cubic root of 79431371 is about 429.8636145795.

The spelling of 79431371 in words is "seventy-nine million, four hundred thirty-one thousand, three hundred seventy-one".