44549921 has 6 divisors (see below), whose sum is σ = 48240630. Its totient is φ = 41122848.

The previous prime is 44549893. The next prime is 44549933. The reversal of 44549921 is 12994544.

44549921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3845521 + 40704400 = 1961^2 + 6380^2 .

It is a de Polignac number, because none of the positive numbers 2^k-44549921 is a prime.

It is a super-2 number, since 2×44549921² = 3969390922212482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44549971) 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 5 ways as a sum of consecutive naturals, for example, 131636 + ... + 131973.

It is an arithmetic number, because the mean of its divisors is an integer number (8040105).

Almost surely, 2^44549921 is an apocalyptic number.

It is an amenable number.

44549921 is a deficient number, since it is larger than the sum of its proper divisors (3690709).

44549921 is a wasteful number, since it uses less digits than its factorization.

44549921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263635 (or 263622 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 44549921 is about 6674.5727204069. The cubic root of 44549921 is about 354.4995155967.

The spelling of 44549921 in words is "forty-four million, five hundred forty-nine thousand, nine hundred twenty-one".