49613921 has 32 divisors (see below), whose sum is σ = 63744000. Its totient is φ = 38419920.

The previous prime is 49613917. The next prime is 49613951. The reversal of 49613921 is 12931694.

It is not a de Polignac number, because 49613921 - 2² = 49613917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49613951) 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, 149726 + ... + 150056.

It is an arithmetic number, because the mean of its divisors is an integer number (1992000).

Almost surely, 2^49613921 is an apocalyptic number.

It is an amenable number.

49613921 is a deficient number, since it is larger than the sum of its proper divisors (14130079).

49613921 is a wasteful number, since it uses less digits than its factorization.

49613921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 380 counting only the distinct ones).

The product of its digits is 11664, while the sum is 35.

The square root of 49613921 is about 7043.7149999130. The cubic root of 49613921 is about 367.4524806283.

The spelling of 49613921 in words is "forty-nine million, six hundred thirteen thousand, nine hundred twenty-one".