49391985 has 16 divisors (see below), whose sum is σ = 80029440. Its totient is φ = 26008320.

The previous prime is 49391939. The next prime is 49392011. The reversal of 49391985 is 58919394.

It is not a de Polignac number, because 49391985 - 2¹¹ = 49389937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19656 + ... + 22025.

It is an arithmetic number, because the mean of its divisors is an integer number (5001840).

Almost surely, 2^49391985 is an apocalyptic number.

It is an amenable number.

49391985 is a deficient number, since it is larger than the sum of its proper divisors (30637455).

49391985 is a wasteful number, since it uses less digits than its factorization.

49391985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41768.

The product of its digits is 349920, while the sum is 48.

The square root of 49391985 is about 7027.9431557178. The cubic root of 49391985 is about 366.9037580472.

The spelling of 49391985 in words is "forty-nine million, three hundred ninety-one thousand, nine hundred eighty-five".