49539924 has 96 divisors (see below), whose sum is σ = 148780800. Its totient is φ = 14136768.

The previous prime is 49539923. The next prime is 49539943. The reversal of 49539924 is 42993594.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 49539924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49539923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60832 + ... + 61640.

It is an arithmetic number, because the mean of its divisors is an integer number (1549800).

Almost surely, 2^49539924 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49539924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74390400).

49539924 is an abundant number, since it is smaller than the sum of its proper divisors (99240876).

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

49539924 is an equidigital number, since it uses as much as digits as its factorization.

49539924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 821 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 49539924 is about 7038.4603430012. The cubic root of 49539924 is about 367.2697099487.

The spelling of 49539924 in words is "forty-nine million, five hundred thirty-nine thousand, nine hundred twenty-four".