444450613 has 2 divisors, whose sum is σ = 444450614. Its totient is φ = 444450612.

The previous prime is 444450563. The next prime is 444450637. The reversal of 444450613 is 316054444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376437604 + 68013009 = 19402^2 + 8247^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444450613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444450673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222225306 + 222225307.

It is an arithmetic number, because the mean of its divisors is an integer number (222225307).

Almost surely, 2^444450613 is an apocalyptic number.

It is an amenable number.

444450613 is a deficient number, since it is larger than the sum of its proper divisors (1).

444450613 is an equidigital number, since it uses as much as digits as its factorization.

444450613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 444450613 is about 21081.9973674223. The cubic root of 444450613 is about 763.1463589693.

The spelling of 444450613 in words is "four hundred forty-four million, four hundred fifty thousand, six hundred thirteen".