49939843 has 2 divisors, whose sum is σ = 49939844. Its totient is φ = 49939842.

The previous prime is 49939837. The next prime is 49939871. The reversal of 49939843 is 34893994.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49939843 is a prime.

It is not a weakly prime, because it can be changed into another prime (49939243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24969921 + 24969922.

It is an arithmetic number, because the mean of its divisors is an integer number (24969922).

Almost surely, 2^49939843 is an apocalyptic number.

49939843 is a deficient number, since it is larger than the sum of its proper divisors (1).

49939843 is an equidigital number, since it uses as much as digits as its factorization.

49939843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 49.

The square root of 49939843 is about 7066.8127893698. The cubic root of 49939843 is about 368.2553437158.

The spelling of 49939843 in words is "forty-nine million, nine hundred thirty-nine thousand, eight hundred forty-three".