63401839 has 2 divisors, whose sum is σ = 63401840. Its totient is φ = 63401838.

The previous prime is 63401797. The next prime is 63401843. The reversal of 63401839 is 93810436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63401839 - 2⁷ = 63401711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63404839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31700919 + 31700920.

It is an arithmetic number, because the mean of its divisors is an integer number (31700920).

Almost surely, 2^63401839 is an apocalyptic number.

63401839 is a deficient number, since it is larger than the sum of its proper divisors (1).

63401839 is an equidigital number, since it uses as much as digits as its factorization.

63401839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 63401839 is about 7962.5271742079. The cubic root of 63401839 is about 398.7499286236.

The spelling of 63401839 in words is "sixty-three million, four hundred one thousand, eight hundred thirty-nine".