389270647 has 4 divisors (see below), whose sum is σ = 389375280. Its totient is φ = 389166016.

The previous prime is 389270617. The next prime is 389270711. The reversal of 389270647 is 746072983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389270647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389270597 and 389270606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389270617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46522 + ... + 54247.

It is an arithmetic number, because the mean of its divisors is an integer number (97343820).

Almost surely, 2^389270647 is an apocalyptic number.

389270647 is a deficient number, since it is larger than the sum of its proper divisors (104633).

389270647 is a wasteful number, since it uses less digits than its factorization.

389270647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104632.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 389270647 is about 19729.9429041242. The cubic root of 389270647 is about 730.1586238145.

The spelling of 389270647 in words is "three hundred eighty-nine million, two hundred seventy thousand, six hundred forty-seven".