49952139 has 12 divisors (see below), whose sum is σ = 67442856. Its totient is φ = 32886592.

The previous prime is 49952131. The next prime is 49952143. The reversal of 49952139 is 93125994.

It is not a de Polignac number, because 49952139 - 2³ = 49952131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49952139.

It is not an unprimeable number, because it can be changed into a prime (49952131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19459 + ... + 21875.

It is an arithmetic number, because the mean of its divisors is an integer number (5620238).

Almost surely, 2^49952139 is an apocalyptic number.

49952139 is a deficient number, since it is larger than the sum of its proper divisors (17490717).

49952139 is an equidigital number, since it uses as much as digits as its factorization.

49952139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586 (or 2503 counting only the distinct ones).

The product of its digits is 87480, while the sum is 42.

The square root of 49952139 is about 7067.6827178362. The cubic root of 49952139 is about 368.2855647167.

The spelling of 49952139 in words is "forty-nine million, nine hundred fifty-two thousand, one hundred thirty-nine".