389987630 has 8 divisors (see below), whose sum is σ = 701977752. Its totient is φ = 155995048.

The previous prime is 389987617. The next prime is 389987639. The reversal of 389987630 is 36789983.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389987639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19499372 + ... + 19499391.

It is an arithmetic number, because the mean of its divisors is an integer number (87747219).

Almost surely, 2^389987630 is an apocalyptic number.

389987630 is a deficient number, since it is larger than the sum of its proper divisors (311990122).

389987630 is a wasteful number, since it uses less digits than its factorization.

389987630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38998770.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 389987630 is about 19748.1044659988. The cubic root of 389987630 is about 730.6066327950.

The spelling of 389987630 in words is "three hundred eighty-nine million, nine hundred eighty-seven thousand, six hundred thirty".