389990814 has 8 divisors (see below), whose sum is σ = 779981640. Its totient is φ = 129996936.

The previous prime is 389990813. The next prime is 389990837. The reversal of 389990814 is 418099983.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

389990814 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389990813) 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, 32499229 + ... + 32499240.

It is an arithmetic number, because the mean of its divisors is an integer number (97497705).

Almost surely, 2^389990814 is an apocalyptic number.

389990814 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389990814 is a wasteful number, since it uses less digits than its factorization.

389990814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64998474.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 389990814 is about 19748.1850811663. The cubic root of 389990814 is about 730.6086211019.

The spelling of 389990814 in words is "three hundred eighty-nine million, nine hundred ninety thousand, eight hundred fourteen".