389988526 has 8 divisors (see below), whose sum is σ = 585219240. Its totient is φ = 194915448.

The previous prime is 389988523. The next prime is 389988541. The reversal of 389988526 is 625889983.

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 (389988523) 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, 33016 + ... + 43243.

It is an arithmetic number, because the mean of its divisors is an integer number (73152405).

Almost surely, 2^389988526 is an apocalyptic number.

389988526 is a deficient number, since it is larger than the sum of its proper divisors (195230714).

389988526 is a wasteful number, since it uses less digits than its factorization.

389988526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78818.

The product of its digits is 7464960, while the sum is 58.

The square root of 389988526 is about 19748.1271517073. The cubic root of 389988526 is about 730.6071923197.

It can be divided in two parts, 38998 and 8526, that added together give a square (47524 = 218²).

The spelling of 389988526 in words is "three hundred eighty-nine million, nine hundred eighty-eight thousand, five hundred twenty-six".