79937287 has 2 divisors, whose sum is σ = 79937288. Its totient is φ = 79937286.

The previous prime is 79937269. The next prime is 79937309. The reversal of 79937287 is 78273997.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79937287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79937227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39968643 + 39968644.

It is an arithmetic number, because the mean of its divisors is an integer number (39968644).

Almost surely, 2^79937287 is an apocalyptic number.

79937287 is a deficient number, since it is larger than the sum of its proper divisors (1).

79937287 is an equidigital number, since it uses as much as digits as its factorization.

79937287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 52.

The square root of 79937287 is about 8940.7654594000. The cubic root of 79937287 is about 430.7743160204.

The spelling of 79937287 in words is "seventy-nine million, nine hundred thirty-seven thousand, two hundred eighty-seven".