444908393 has 2 divisors, whose sum is σ = 444908394. Its totient is φ = 444908392.

The previous prime is 444908381. The next prime is 444908437. The reversal of 444908393 is 393809444.

It is an a-pointer prime, because the next prime (444908437) can be obtained adding 444908393 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381499024 + 63409369 = 19532^2 + 7963^2 .

It is a cyclic number.

It is not a de Polignac number, because 444908393 - 2¹⁴ = 444892009 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_23597459 and since 444908393 and 23597459 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (444908353) 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, 222454196 + 222454197.

It is an arithmetic number, because the mean of its divisors is an integer number (222454197).

Almost surely, 2^444908393 is an apocalyptic number.

It is an amenable number.

444908393 is a deficient number, since it is larger than the sum of its proper divisors (1).

444908393 is an equidigital number, since it uses as much as digits as its factorization.

444908393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 444908393 is about 21092.8517038356. The cubic root of 444908393 is about 763.4082802830.

The spelling of 444908393 in words is "four hundred forty-four million, nine hundred eight thousand, three hundred ninety-three".