44891121 has 12 divisors (see below), whose sum is σ = 65791376. Its totient is φ = 27206520.

The previous prime is 44891117. The next prime is 44891123. The reversal of 44891121 is 12119844.

It is not a de Polignac number, because 44891121 - 2² = 44891117 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (44891123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61471 + ... + 62196.

Almost surely, 2^44891121 is an apocalyptic number.

It is an amenable number.

44891121 is a deficient number, since it is larger than the sum of its proper divisors (20900255).

44891121 is a wasteful number, since it uses less digits than its factorization.

44891121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123692 (or 123681 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 44891121 is about 6700.0836561942. The cubic root of 44891121 is about 355.4022313787.

The spelling of 44891121 in words is "forty-four million, eight hundred ninety-one thousand, one hundred twenty-one".