44971921 has 8 divisors (see below), whose sum is σ = 45511200. Its totient is φ = 44436000.

The previous prime is 44971891. The next prime is 44971939. The reversal of 44971921 is 12917944.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44971921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44971981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34245 + ... + 35533.

It is an arithmetic number, because the mean of its divisors is an integer number (5688900).

Almost surely, 2^44971921 is an apocalyptic number.

It is an amenable number.

44971921 is a deficient number, since it is larger than the sum of its proper divisors (539279).

44971921 is a wasteful number, since it uses less digits than its factorization.

44971921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679.

The product of its digits is 18144, while the sum is 37.

The square root of 44971921 is about 6706.1107208277. The cubic root of 44971921 is about 355.6153343102.

The spelling of 44971921 in words is "forty-four million, nine hundred seventy-one thousand, nine hundred twenty-one".