445398943 has 6 divisors (see below), whose sum is σ = 489570872. Its totient is φ = 404908020.

The previous prime is 445398937. The next prime is 445398959. The reversal of 445398943 is 349893544.

It is not a de Polignac number, because 445398943 - 2⁵ = 445398911 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 (445398913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1840371 + ... + 1840612.

Almost surely, 2^445398943 is an apocalyptic number.

445398943 is a deficient number, since it is larger than the sum of its proper divisors (44171929).

445398943 is a wasteful number, since it uses less digits than its factorization.

445398943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681005 (or 3680994 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 49.

The square root of 445398943 is about 21104.4768473421. The cubic root of 445398943 is about 763.6887517884.

The spelling of 445398943 in words is "four hundred forty-five million, three hundred ninety-eight thousand, nine hundred forty-three".