44771921 has 2 divisors, whose sum is σ = 44771922. Its totient is φ = 44771920.

The previous prime is 44771917. The next prime is 44771941. The reversal of 44771921 is 12917744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26666896 + 18105025 = 5164^2 + 4255^2 .

It is a cyclic number.

It is not a de Polignac number, because 44771921 - 2² = 44771917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (44771941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22385960 + 22385961.

It is an arithmetic number, because the mean of its divisors is an integer number (22385961).

Almost surely, 2^44771921 is an apocalyptic number.

It is an amenable number.

44771921 is a deficient number, since it is larger than the sum of its proper divisors (1).

44771921 is an equidigital number, since it uses as much as digits as its factorization.

44771921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 35.

The square root of 44771921 is about 6691.1823319948. The cubic root of 44771921 is about 355.0873844262.

The spelling of 44771921 in words is "forty-four million, seven hundred seventy-one thousand, nine hundred twenty-one".