44212921 has 2 divisors, whose sum is σ = 44212922. Its totient is φ = 44212920.

The previous prime is 44212879. The next prime is 44212933. The reversal of 44212921 is 12921244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33223696 + 10989225 = 5764^2 + 3315^2 .

It is a cyclic number.

It is not a de Polignac number, because 44212921 - 2⁷ = 44212793 is a prime.

It is not a weakly prime, because it can be changed into another prime (44212991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22106460 + 22106461.

It is an arithmetic number, because the mean of its divisors is an integer number (22106461).

Almost surely, 2^44212921 is an apocalyptic number.

It is an amenable number.

44212921 is a deficient number, since it is larger than the sum of its proper divisors (1).

44212921 is an equidigital number, since it uses as much as digits as its factorization.

44212921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 25.

The square root of 44212921 is about 6649.2797354300. The cubic root of 44212921 is about 353.6033759949.

The spelling of 44212921 in words is "forty-four million, two hundred twelve thousand, nine hundred twenty-one".