502681939 has 2 divisors, whose sum is σ = 502681940. Its totient is φ = 502681938.

The previous prime is 502681931. The next prime is 502681943. The reversal of 502681939 is 939186205.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 502681939 - 2³ = 502681931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 502681895 and 502681904.

It is not a weakly prime, because it can be changed into another prime (502681931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251340969 + 251340970.

It is an arithmetic number, because the mean of its divisors is an integer number (251340970).

Almost surely, 2^502681939 is an apocalyptic number.

502681939 is a deficient number, since it is larger than the sum of its proper divisors (1).

502681939 is an equidigital number, since it uses as much as digits as its factorization.

502681939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 502681939 is about 22420.5695511956. The cubic root of 502681939 is about 795.1171004807.

The spelling of 502681939 in words is "five hundred two million, six hundred eighty-one thousand, nine hundred thirty-nine".