63339839 has 2 divisors, whose sum is σ = 63339840. Its totient is φ = 63339838.

The previous prime is 63339833. The next prime is 63339869. The reversal of 63339839 is 93893336.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63339839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63339839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63339833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31669919 + 31669920.

It is an arithmetic number, because the mean of its divisors is an integer number (31669920).

Almost surely, 2^63339839 is an apocalyptic number.

63339839 is a deficient number, since it is larger than the sum of its proper divisors (1).

63339839 is an equidigital number, since it uses as much as digits as its factorization.

63339839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 44.

The square root of 63339839 is about 7958.6329856326. The cubic root of 63339839 is about 398.6199084277.

The spelling of 63339839 in words is "sixty-three million, three hundred thirty-nine thousand, eight hundred thirty-nine".