444385537 has 2 divisors, whose sum is σ = 444385538. Its totient is φ = 444385536.

The previous prime is 444385481. The next prime is 444385541. The reversal of 444385537 is 735583444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 392990976 + 51394561 = 19824^2 + 7169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444385537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 444385493 and 444385502.

It is not a weakly prime, because it can be changed into another prime (444385597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222192768 + 222192769.

It is an arithmetic number, because the mean of its divisors is an integer number (222192769).

Almost surely, 2^444385537 is an apocalyptic number.

It is an amenable number.

444385537 is a deficient number, since it is larger than the sum of its proper divisors (1).

444385537 is an equidigital number, since it uses as much as digits as its factorization.

444385537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 806400, while the sum is 43.

The square root of 444385537 is about 21080.4539087753. The cubic root of 444385537 is about 763.1091107839.

The spelling of 444385537 in words is "four hundred forty-four million, three hundred eighty-five thousand, five hundred thirty-seven".