49489221 has 4 divisors (see below), whose sum is σ = 65985632. Its totient is φ = 32992812.

The previous prime is 49489213. The next prime is 49489277. The reversal of 49489221 is 12298494.

49489221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 49489221 - 2³ = 49489213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49489221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49489211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8248201 + ... + 8248206.

It is an arithmetic number, because the mean of its divisors is an integer number (16496408).

Almost surely, 2^49489221 is an apocalyptic number.

It is an amenable number.

49489221 is a deficient number, since it is larger than the sum of its proper divisors (16496411).

49489221 is a wasteful number, since it uses less digits than its factorization.

49489221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16496410.

The product of its digits is 41472, while the sum is 39.

The square root of 49489221 is about 7034.8575678545. The cubic root of 49489221 is about 367.1443697438.

The spelling of 49489221 in words is "forty-nine million, four hundred eighty-nine thousand, two hundred twenty-one".