502749979 has 2 divisors, whose sum is σ = 502749980. Its totient is φ = 502749978.

The previous prime is 502749889. The next prime is 502750019. The reversal of 502749979 is 979947205.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-502749979 is a prime.

It is not a weakly prime, because it can be changed into another prime (502749179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251374989 + 251374990.

It is an arithmetic number, because the mean of its divisors is an integer number (251374990).

Almost surely, 2^502749979 is an apocalyptic number.

502749979 is a deficient number, since it is larger than the sum of its proper divisors (1).

502749979 is an equidigital number, since it uses as much as digits as its factorization.

502749979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 52.

The square root of 502749979 is about 22422.0868564904. The cubic root of 502749979 is about 795.1529729497.

The spelling of 502749979 in words is "five hundred two million, seven hundred forty-nine thousand, nine hundred seventy-nine".