79997237 has 2 divisors, whose sum is σ = 79997238. Its totient is φ = 79997236.

The previous prime is 79997227. The next prime is 79997251. The reversal of 79997237 is 73279997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79673476 + 323761 = 8926^2 + 569^2 .

It is a cyclic number.

It is not a de Polignac number, because 79997237 - 2⁴ = 79997221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79997207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39998618 + 39998619.

It is an arithmetic number, because the mean of its divisors is an integer number (39998619).

Almost surely, 2^79997237 is an apocalyptic number.

It is an amenable number.

79997237 is a deficient number, since it is larger than the sum of its proper divisors (1).

79997237 is an equidigital number, since it uses as much as digits as its factorization.

79997237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1500282, while the sum is 53.

The square root of 79997237 is about 8944.1174522700. The cubic root of 79997237 is about 430.8819773634.

The spelling of 79997237 in words is "seventy-nine million, nine hundred ninety-seven thousand, two hundred thirty-seven".