389279647 has 12 divisors (see below), whose sum is σ = 400018360. Its totient is φ = 378806688.

The previous prime is 389279641. The next prime is 389279717. The reversal of 389279647 is 746972983.

It is a de Polignac number, because none of the positive numbers 2^k-389279647 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 (389279641) 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, 389953 + ... + 390949.

Almost surely, 2^389279647 is an apocalyptic number.

389279647 is a deficient number, since it is larger than the sum of its proper divisors (10738713).

389279647 is an equidigital number, since it uses as much as digits as its factorization.

389279647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242 (or 1189 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 55.

The square root of 389279647 is about 19730.1709825333. The cubic root of 389279647 is about 730.1642508995.

The spelling of 389279647 in words is "three hundred eighty-nine million, two hundred seventy-nine thousand, six hundred forty-seven".