79740907 has 2 divisors, whose sum is σ = 79740908. Its totient is φ = 79740906.

The previous prime is 79740901. The next prime is 79740911. The reversal of 79740907 is 70904797.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79740907 - 2¹¹ = 79738859 is a prime.

It is a super-2 number, since 2×79740907² = 12717224498365298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79740901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39870453 + 39870454.

It is an arithmetic number, because the mean of its divisors is an integer number (39870454).

Almost surely, 2^79740907 is an apocalyptic number.

79740907 is a deficient number, since it is larger than the sum of its proper divisors (1).

79740907 is an equidigital number, since it uses as much as digits as its factorization.

79740907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 111132, while the sum is 43.

The square root of 79740907 is about 8929.7764249728. The cubic root of 79740907 is about 430.4212691399.

The spelling of 79740907 in words is "seventy-nine million, seven hundred forty thousand, nine hundred seven".