49859839 has 2 divisors, whose sum is σ = 49859840. Its totient is φ = 49859838.

The previous prime is 49859801. The next prime is 49859851. The reversal of 49859839 is 93895894.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49859839 - 2²⁵ = 16305407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49859839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49859899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24929919 + 24929920.

It is an arithmetic number, because the mean of its divisors is an integer number (24929920).

Almost surely, 2^49859839 is an apocalyptic number.

49859839 is a deficient number, since it is larger than the sum of its proper divisors (1).

49859839 is an equidigital number, since it uses as much as digits as its factorization.

49859839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 55.

The square root of 49859839 is about 7061.1499771638. The cubic root of 49859839 is about 368.0585893443.

The spelling of 49859839 in words is "forty-nine million, eight hundred fifty-nine thousand, eight hundred thirty-nine".