445399379 has 4 divisors (see below), whose sum is σ = 445685184. Its totient is φ = 445113576.

The previous prime is 445399373. The next prime is 445399391. The reversal of 445399379 is 973993544.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 445399379 - 2²⁸ = 176963923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 445399379.

It is not an unprimeable number, because it can be changed into a prime (445399373) 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, 140552 + ... + 143685.

It is an arithmetic number, because the mean of its divisors is an integer number (111421296).

Almost surely, 2^445399379 is an apocalyptic number.

445399379 is a deficient number, since it is larger than the sum of its proper divisors (285805).

445399379 is a wasteful number, since it uses less digits than its factorization.

445399379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285804.

The product of its digits is 3674160, while the sum is 53.

The square root of 445399379 is about 21104.4871769015. The cubic root of 445399379 is about 763.6890009794.

The spelling of 445399379 in words is "four hundred forty-five million, three hundred ninety-nine thousand, three hundred seventy-nine".