79005631 has 2 divisors, whose sum is σ = 79005632. Its totient is φ = 79005630.

The previous prime is 79005607. The next prime is 79005643. The reversal of 79005631 is 13650097.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79005631 - 2¹¹ = 79003583 is a prime.

It is a super-3 number, since 3×79005631³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 79005593 and 79005602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79005601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39502815 + 39502816.

It is an arithmetic number, because the mean of its divisors is an integer number (39502816).

Almost surely, 2^79005631 is an apocalyptic number.

79005631 is a deficient number, since it is larger than the sum of its proper divisors (1).

79005631 is an equidigital number, since it uses as much as digits as its factorization.

79005631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 79005631 is about 8888.5111801696. The cubic root of 79005631 is about 429.0942372800.

It can be divided in two parts, 7900 and 5631, that added together give a palindrome (13531).

The spelling of 79005631 in words is "seventy-nine million, five thousand, six hundred thirty-one".