444357797 has 4 divisors (see below), whose sum is σ = 478539180. Its totient is φ = 410176416.

The previous prime is 444357791. The next prime is 444357799. The reversal of 444357797 is 797753444.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162588001 + 281769796 = 12751^2 + 16786^2 .

It is not a de Polignac number, because 444357797 - 2¹⁸ = 444095653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444357791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17090672 + ... + 17090697.

It is an arithmetic number, because the mean of its divisors is an integer number (119634795).

Almost surely, 2^444357797 is an apocalyptic number.

It is an amenable number.

444357797 is a deficient number, since it is larger than the sum of its proper divisors (34181383).

444357797 is a wasteful number, since it uses less digits than its factorization.

444357797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34181382.

The product of its digits is 2963520, while the sum is 50.

The square root of 444357797 is about 21079.7959430351. The cubic root of 444357797 is about 763.0932318638.

The spelling of 444357797 in words is "four hundred forty-four million, three hundred fifty-seven thousand, seven hundred ninety-seven".