444450893 has 4 divisors (see below), whose sum is σ = 445537980. Its totient is φ = 443363808.

The previous prime is 444450889. The next prime is 444450899. The reversal of 444450893 is 398054444.

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 406344964 + 38105929 = 20158^2 + 6173^2 .

It is a cyclic number.

It is not a de Polignac number, because 444450893 - 2² = 444450889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 444450893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444450899) 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, 542930 + ... + 543747.

It is an arithmetic number, because the mean of its divisors is an integer number (111384495).

Almost surely, 2^444450893 is an apocalyptic number.

It is an amenable number.

444450893 is a deficient number, since it is larger than the sum of its proper divisors (1087087).

444450893 is a wasteful number, since it uses less digits than its factorization.

444450893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087086.

The product of its (nonzero) digits is 276480, while the sum is 41.

The square root of 444450893 is about 21082.0040081582. The cubic root of 444450893 is about 763.1465192277.

The spelling of 444450893 in words is "four hundred forty-four million, four hundred fifty thousand, eight hundred ninety-three".