444864945 has 32 divisors (see below), whose sum is σ = 814390272. Its totient is φ = 203136192.

The previous prime is 444864943. The next prime is 444864947. The reversal of 444864945 is 549468444.

It is an interprime number because it is at equal distance from previous prime (444864943) and next prime (444864947).

It is not a de Polignac number, because 444864945 - 2¹ = 444864943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 444864894 and 444864903.

It is not an unprimeable number, because it can be changed into a prime (444864943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120294 + ... + 123936.

It is an arithmetic number, because the mean of its divisors is an integer number (25449696).

Almost surely, 2^444864945 is an apocalyptic number.

It is an amenable number.

444864945 is a deficient number, since it is larger than the sum of its proper divisors (369525327).

444864945 is a wasteful number, since it uses less digits than its factorization.

444864945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4821.

The product of its digits is 2211840, while the sum is 48.

The square root of 444864945 is about 21091.8217563111. The cubic root of 444864945 is about 763.3834289928.

The spelling of 444864945 in words is "four hundred forty-four million, eight hundred sixty-four thousand, nine hundred forty-five".