49171864 has 32 divisors (see below), whose sum is σ = 105605280. Its totient is φ = 21026304.

The previous prime is 49171819. The next prime is 49171873. The reversal of 49171864 is 46817194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37264 + ... + 38560.

It is an arithmetic number, because the mean of its divisors is an integer number (3300165).

Almost surely, 2^49171864 is an apocalyptic number.

It is an amenable number.

49171864 is an abundant number, since it is smaller than the sum of its proper divisors (56433416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49171864 is a wasteful number, since it uses less digits than its factorization.

49171864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987 (or 1983 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 49171864 is about 7012.2652545379. The cubic root of 49171864 is about 366.3578968993.

The spelling of 49171864 in words is "forty-nine million, one hundred seventy-one thousand, eight hundred sixty-four".