49928391 has 6 divisors (see below), whose sum is σ = 72118800. Its totient is φ = 33285588.

The previous prime is 49928381. The next prime is 49928393. The reversal of 49928391 is 19382994.

It is not a de Polignac number, because 49928391 - 2⁶ = 49928327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49928393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2773791 + ... + 2773808.

It is an arithmetic number, because the mean of its divisors is an integer number (12019800).

Almost surely, 2^49928391 is an apocalyptic number.

49928391 is a deficient number, since it is larger than the sum of its proper divisors (22190409).

49928391 is a wasteful number, since it uses less digits than its factorization.

49928391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5547605 (or 5547602 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 49928391 is about 7066.0024766483. The cubic root of 49928391 is about 368.2271926288.

The spelling of 49928391 in words is "forty-nine million, nine hundred twenty-eight thousand, three hundred ninety-one".