389231863 has 8 divisors (see below), whose sum is σ = 398580480. Its totient is φ = 379927800.

The previous prime is 389231851. The next prime is 389231917. The reversal of 389231863 is 368132983.

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 389231863 - 2⁹ = 389231351 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 (389231363) 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, 6888 + ... + 28738.

It is an arithmetic number, because the mean of its divisors is an integer number (49822560).

Almost surely, 2^389231863 is an apocalyptic number.

389231863 is a deficient number, since it is larger than the sum of its proper divisors (9348617).

389231863 is a wasteful number, since it uses less digits than its factorization.

389231863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22277.

The product of its digits is 186624, while the sum is 43.

The square root of 389231863 is about 19728.9600080694. The cubic root of 389231863 is about 730.1343738376.

The spelling of 389231863 in words is "three hundred eighty-nine million, two hundred thirty-one thousand, eight hundred sixty-three".