49902105839 has 2 divisors, whose sum is σ = 49902105840. Its totient is φ = 49902105838.

The previous prime is 49902105829. The next prime is 49902105863. The reversal of 49902105839 is 93850120994.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49902105839 - 2⁴ = 49902105823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49902105829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24951052919 + 24951052920.

It is an arithmetic number, because the mean of its divisors is an integer number (24951052920).

Almost surely, 2^49902105839 is an apocalyptic number.

49902105839 is a deficient number, since it is larger than the sum of its proper divisors (1).

49902105839 is an equidigital number, since it uses as much as digits as its factorization.

49902105839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 49902105839 in words is "forty-nine billion, nine hundred two million, one hundred five thousand, eight hundred thirty-nine".