44345921 has 2 divisors, whose sum is σ = 44345922. Its totient is φ = 44345920.

The previous prime is 44345879. The next prime is 44345933. The reversal of 44345921 is 12954344.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33223696 + 11122225 = 5764^2 + 3335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44345921 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (44345971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22172960 + 22172961.

It is an arithmetic number, because the mean of its divisors is an integer number (22172961).

Almost surely, 2^44345921 is an apocalyptic number.

It is an amenable number.

44345921 is a deficient number, since it is larger than the sum of its proper divisors (1).

44345921 is an equidigital number, since it uses as much as digits as its factorization.

44345921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 44345921 is about 6659.2733087027. The cubic root of 44345921 is about 353.9575874582.

It can be divided in two parts, 443 and 45921, that added together give a palindrome (46364).

The spelling of 44345921 in words is "forty-four million, three hundred forty-five thousand, nine hundred twenty-one".