389963863 has 8 divisors (see below), whose sum is σ = 396882000. Its totient is φ = 383056128.

The previous prime is 389963857. The next prime is 389963869. The reversal of 389963863 is 368369983.

It is an interprime number because it is at equal distance from previous prime (389963857) and next prime (389963869).

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 389963863 - 2¹⁷ = 389832791 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 (389963869) 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, 149095 + ... + 151687.

It is an arithmetic number, because the mean of its divisors is an integer number (49610250).

Almost surely, 2^389963863 is an apocalyptic number.

389963863 is a deficient number, since it is larger than the sum of its proper divisors (6918137).

389963863 is a wasteful number, since it uses less digits than its factorization.

389963863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5201.

The product of its digits is 5038848, while the sum is 55.

The square root of 389963863 is about 19747.5027028736. The cubic root of 389963863 is about 730.5917907169.

The spelling of 389963863 in words is "three hundred eighty-nine million, nine hundred sixty-three thousand, eight hundred sixty-three".