444454545 has 64 divisors (see below), whose sum is σ = 780744960. Its totient is φ = 215737344.

The previous prime is 444454537. The next prime is 444454561. The reversal of 444454545 is 545454444.

It is not a de Polignac number, because 444454545 - 2³ = 444454537 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2726634 + ... + 2726796.

It is an arithmetic number, because the mean of its divisors is an integer number (12199140).

Almost surely, 2^444454545 is an apocalyptic number.

It is an amenable number.

444454545 is a deficient number, since it is larger than the sum of its proper divisors (336290415).

444454545 is a wasteful number, since it uses less digits than its factorization.

444454545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 225 counting only the distinct ones).

The product of its digits is 512000, while the sum is 39.

The square root of 444454545 is about 21082.0906221371. The cubic root of 444454545 is about 763.1486094500.

The spelling of 444454545 in words is "four hundred forty-four million, four hundred fifty-four thousand, five hundred forty-five".