445670393 has 4 divisors (see below), whose sum is σ = 509337600. Its totient is φ = 382003188.

The previous prime is 445670387. The next prime is 445670417. The reversal of 445670393 is 393076544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 445670393 - 2¹² = 445666297 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 445670393.

It is not an unprimeable number, because it can be changed into a prime (445670383) 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, 31833593 + ... + 31833606.

It is an arithmetic number, because the mean of its divisors is an integer number (127334400).

Almost surely, 2^445670393 is an apocalyptic number.

It is an amenable number.

445670393 is a deficient number, since it is larger than the sum of its proper divisors (63667207).

445670393 is an equidigital number, since it uses as much as digits as its factorization.

445670393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63667206.

The product of its (nonzero) digits is 272160, while the sum is 41.

The square root of 445670393 is about 21110.9069677264. The cubic root of 445670393 is about 763.8438645738.

The spelling of 445670393 in words is "four hundred forty-five million, six hundred seventy thousand, three hundred ninety-three".