444070813 has 2 divisors, whose sum is σ = 444070814. Its totient is φ = 444070812.

The previous prime is 444070807. The next prime is 444070817. The reversal of 444070813 is 318070444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225090009 + 218980804 = 15003^2 + 14798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444070813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444070817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222035406 + 222035407.

It is an arithmetic number, because the mean of its divisors is an integer number (222035407).

Almost surely, 2^444070813 is an apocalyptic number.

It is an amenable number.

444070813 is a deficient number, since it is larger than the sum of its proper divisors (1).

444070813 is an equidigital number, since it uses as much as digits as its factorization.

444070813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 444070813 is about 21072.9877568417. The cubic root of 444070813 is about 762.9289177969.

The spelling of 444070813 in words is "four hundred forty-four million, seventy thousand, eight hundred thirteen".