80929879 has 2 divisors, whose sum is σ = 80929880. Its totient is φ = 80929878.

The previous prime is 80929853. The next prime is 80929907. The reversal of 80929879 is 97892908.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80929879 - 2²¹ = 78832727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80929819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40464939 + 40464940.

It is an arithmetic number, because the mean of its divisors is an integer number (40464940).

Almost surely, 2^80929879 is an apocalyptic number.

80929879 is a deficient number, since it is larger than the sum of its proper divisors (1).

80929879 is an equidigital number, since it uses as much as digits as its factorization.

80929879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 52.

The square root of 80929879 is about 8996.1035454245. The cubic root of 80929879 is about 432.5499807475.

It can be divided in two parts, 8092 and 9879, that added together give a palindrome (17971).

The spelling of 80929879 in words is "eighty million, nine hundred twenty-nine thousand, eight hundred seventy-nine".