389290 has 16 divisors (see below), whose sum is σ = 764640. Its totient is φ = 141520.

The previous prime is 389287. The next prime is 389297. The reversal of 389290 is 92983.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (389297) 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, 1660 + ... + 1879.

It is an arithmetic number, because the mean of its divisors is an integer number (47790).

2³⁸⁹²⁹⁰ is an apocalyptic number.

389290 is a deficient number, since it is larger than the sum of its proper divisors (375350).

389290 is a wasteful number, since it uses less digits than its factorization.

389290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3557.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 389290 is about 623.9310859382. The cubic root of 389290 is about 73.0170723816.

The spelling of 389290 in words is "three hundred eighty-nine thousand, two hundred ninety".