49389939 has 8 divisors (see below), whose sum is σ = 73170320. Its totient is φ = 32926608.

The previous prime is 49389937. The next prime is 49389959. The reversal of 49389939 is 93998394.

It is not a de Polignac number, because 49389939 - 2¹ = 49389937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49389937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 914602 + ... + 914655.

It is an arithmetic number, because the mean of its divisors is an integer number (9146290).

Almost surely, 2^49389939 is an apocalyptic number.

49389939 is a deficient number, since it is larger than the sum of its proper divisors (23780381).

49389939 is a wasteful number, since it uses less digits than its factorization.

49389939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829266 (or 1829260 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 49389939 is about 7027.7975924183. The cubic root of 49389939 is about 366.8986918038.

The spelling of 49389939 in words is "forty-nine million, three hundred eighty-nine thousand, nine hundred thirty-nine".