389436369 has 32 divisors (see below), whose sum is σ = 637440000. Its totient is φ = 210812112.

The previous prime is 389436343. The next prime is 389436373. The reversal of 389436369 is 963634983.

It is not a de Polignac number, because 389436369 - 2¹³ = 389428177 is a prime.

It is a super-2 number, since 2×389436369² = 303321370999808322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (389436319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9592 + ... + 29510.

It is an arithmetic number, because the mean of its divisors is an integer number (19920000).

Almost surely, 2^389436369 is an apocalyptic number.

It is an amenable number.

389436369 is a deficient number, since it is larger than the sum of its proper divisors (248003631).

389436369 is a wasteful number, since it uses less digits than its factorization.

389436369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19962 (or 19948 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 51.

The square root of 389436369 is about 19734.1422159667. The cubic root of 389436369 is about 730.2622245536.

The spelling of 389436369 in words is "three hundred eighty-nine million, four hundred thirty-six thousand, three hundred sixty-nine".