389982239 has 4 divisors (see below), whose sum is σ = 410507640. Its totient is φ = 369456840.

The previous prime is 389982233. The next prime is 389982253. The reversal of 389982239 is 932289983.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 389982239 - 2²⁸ = 121546783 is a prime.

It is a super-2 number, since 2×389982239² = 304172293470906242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389982233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10262672 + ... + 10262709.

It is an arithmetic number, because the mean of its divisors is an integer number (102626910).

Almost surely, 2^389982239 is an apocalyptic number.

389982239 is a deficient number, since it is larger than the sum of its proper divisors (20525401).

389982239 is a wasteful number, since it uses less digits than its factorization.

389982239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20525400.

The product of its digits is 1679616, while the sum is 53.

The square root of 389982239 is about 19747.9679714142. The cubic root of 389982239 is about 730.6032662622.

The spelling of 389982239 in words is "three hundred eighty-nine million, nine hundred eighty-two thousand, two hundred thirty-nine".