444359021 has 2 divisors, whose sum is σ = 444359022. Its totient is φ = 444359020.

The previous prime is 444358997. The next prime is 444359059. The reversal of 444359021 is 120953444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245266921 + 199092100 = 15661^2 + 14110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444359021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444359221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222179510 + 222179511.

It is an arithmetic number, because the mean of its divisors is an integer number (222179511).

Almost surely, 2^444359021 is an apocalyptic number.

It is an amenable number.

444359021 is a deficient number, since it is larger than the sum of its proper divisors (1).

444359021 is an equidigital number, since it uses as much as digits as its factorization.

444359021 is an evil number, because the sum of its binary digits is even.

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

The square root of 444359021 is about 21079.8249755542. The cubic root of 444359021 is about 763.0939325194.

The spelling of 444359021 in words is "four hundred forty-four million, three hundred fifty-nine thousand, twenty-one".