44947921 has 2 divisors, whose sum is σ = 44947922. Its totient is φ = 44947920.

The previous prime is 44947913. The next prime is 44947979. The reversal of 44947921 is 12974944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27973521 + 16974400 = 5289^2 + 4120^2 .

It is a cyclic number.

It is not a de Polignac number, because 44947921 - 2³ = 44947913 is a prime.

It is not a weakly prime, because it can be changed into another prime (44945921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22473960 + 22473961.

It is an arithmetic number, because the mean of its divisors is an integer number (22473961).

Almost surely, 2^44947921 is an apocalyptic number.

It is an amenable number.

44947921 is a deficient number, since it is larger than the sum of its proper divisors (1).

44947921 is an equidigital number, since it uses as much as digits as its factorization.

44947921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 44947921 is about 6704.3210692806. The cubic root of 44947921 is about 355.5520630770.

The spelling of 44947921 in words is "forty-four million, nine hundred forty-seven thousand, nine hundred twenty-one".