79699331 has 2 divisors, whose sum is σ = 79699332. Its totient is φ = 79699330.

The previous prime is 79699327. The next prime is 79699343. The reversal of 79699331 is 13399697.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79699331 - 2² = 79699327 is a prime.

It is a super-2 number, since 2×79699331² = 12703966723695122, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (79699391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39849665 + 39849666.

It is an arithmetic number, because the mean of its divisors is an integer number (39849666).

Almost surely, 2^79699331 is an apocalyptic number.

79699331 is a deficient number, since it is larger than the sum of its proper divisors (1).

79699331 is an equidigital number, since it uses as much as digits as its factorization.

79699331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 275562, while the sum is 47.

The square root of 79699331 is about 8927.4481796312. The cubic root of 79699331 is about 430.3464505540.

The spelling of 79699331 in words is "seventy-nine million, six hundred ninety-nine thousand, three hundred thirty-one".