49190139 has 8 divisors (see below), whose sum is σ = 72874320. Its totient is φ = 32793408.

The previous prime is 49190093. The next prime is 49190159. The reversal of 49190139 is 93109194.

It is not a de Polignac number, because 49190139 - 2²⁰ = 48141563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49190159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910902 + ... + 910955.

It is an arithmetic number, because the mean of its divisors is an integer number (9109290).

Almost surely, 2^49190139 is an apocalyptic number.

49190139 is a deficient number, since it is larger than the sum of its proper divisors (23684181).

49190139 is a wasteful number, since it uses less digits than its factorization.

49190139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821866 (or 1821860 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 49190139 is about 7013.5682074105. The cubic root of 49190139 is about 366.4032776025.

The spelling of 49190139 in words is "forty-nine million, one hundred ninety thousand, one hundred thirty-nine".