389992445 has 8 divisors (see below), whose sum is σ = 469497600. Its totient is φ = 310989520.

The previous prime is 389992441. The next prime is 389992483. The reversal of 389992445 is 544299983.

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

It is not a de Polignac number, because 389992445 - 2² = 389992441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389992441) 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, 123845 + ... + 126954.

It is an arithmetic number, because the mean of its divisors is an integer number (58687200).

Almost surely, 2^389992445 is an apocalyptic number.

It is an amenable number.

389992445 is a deficient number, since it is larger than the sum of its proper divisors (79505155).

389992445 is a wasteful number, since it uses less digits than its factorization.

389992445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251115.

The product of its digits is 2799360, while the sum is 53.

The square root of 389992445 is about 19748.2263760572. The cubic root of 389992445 is about 730.6096396053.

The spelling of 389992445 in words is "three hundred eighty-nine million, nine hundred ninety-two thousand, four hundred forty-five".