445889647 has 8 divisors (see below), whose sum is σ = 526026752. Its totient is φ = 369862200.

The previous prime is 445889641. The next prime is 445889657. The reversal of 445889647 is 746988544.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 445889647 - 2¹⁹ = 445365359 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 (445889641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1027179 + ... + 1027612.

It is an arithmetic number, because the mean of its divisors is an integer number (65753344).

Almost surely, 2^445889647 is an apocalyptic number.

445889647 is a deficient number, since it is larger than the sum of its proper divisors (80137105).

445889647 is a wasteful number, since it uses less digits than its factorization.

445889647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054829.

The product of its digits is 7741440, while the sum is 55.

The square root of 445889647 is about 21116.0992373118. The cubic root of 445889647 is about 763.9691053861.

The spelling of 445889647 in words is "four hundred forty-five million, eight hundred eighty-nine thousand, six hundred forty-seven".