49989971 has 12 divisors (see below), whose sum is σ = 53273808. Its totient is φ = 46887984.

The previous prime is 49989967. The next prime is 49989983. The reversal of 49989971 is 17998994.

It is not a de Polignac number, because 49989971 - 2² = 49989967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49989991) 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, 27146 + ... + 28928.

It is an arithmetic number, because the mean of its divisors is an integer number (4439484).

Almost surely, 2^49989971 is an apocalyptic number.

49989971 is a deficient number, since it is larger than the sum of its proper divisors (3283837).

49989971 is a wasteful number, since it uses less digits than its factorization.

49989971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882 (or 1859 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 56.

The square root of 49989971 is about 7070.3586189104. The cubic root of 49989971 is about 368.3785167824.

The spelling of 49989971 in words is "forty-nine million, nine hundred eighty-nine thousand, nine hundred seventy-one".