79405331 has 2 divisors, whose sum is σ = 79405332. Its totient is φ = 79405330.

The previous prime is 79405321. The next prime is 79405343. The reversal of 79405331 is 13350497.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79405331 - 2¹⁰ = 79404307 is a prime.

It is a super-2 number, since 2×79405331² = 12610413182439122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79405321) 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, 39702665 + 39702666.

It is an arithmetic number, because the mean of its divisors is an integer number (39702666).

Almost surely, 2^79405331 is an apocalyptic number.

79405331 is a deficient number, since it is larger than the sum of its proper divisors (1).

79405331 is an equidigital number, since it uses as much as digits as its factorization.

79405331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 79405331 is about 8910.9668947876. The cubic root of 79405331 is about 429.8166353579.

The spelling of 79405331 in words is "seventy-nine million, four hundred five thousand, three hundred thirty-one".