445605399 has 12 divisors (see below), whose sum is σ = 643845696. Its totient is φ = 296980992.

The previous prime is 445605383. The next prime is 445605401. The reversal of 445605399 is 993506544.

445605399 is a `hidden beast` number, since 4 + 4 + 5 + 605 + 39 + 9 = 666.

It is not a de Polignac number, because 445605399 - 2⁴ = 445605383 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445605299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40279 + ... + 50135.

It is an arithmetic number, because the mean of its divisors is an integer number (53653808).

Almost surely, 2^445605399 is an apocalyptic number.

445605399 is a deficient number, since it is larger than the sum of its proper divisors (198240297).

445605399 is a wasteful number, since it uses less digits than its factorization.

445605399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14886 (or 14883 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 445605399 is about 21109.3675651356. The cubic root of 445605399 is about 763.8067312406.

The spelling of 445605399 in words is "four hundred forty-five million, six hundred five thousand, three hundred ninety-nine".