389232490 has 16 divisors (see below), whose sum is σ = 724778280. Its totient is φ = 150324160.

The previous prime is 389232479. The next prime is 389232491. The reversal of 389232490 is 94232983.

It can be written as a sum of positive squares in 4 ways, for example, as 245016409 + 144216081 = 15653^2 + 12009^2 .

It is not an unprimeable number, because it can be changed into a prime (389232491) 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 7 ways as a sum of consecutive naturals, for example, 670801 + ... + 671380.

Almost surely, 2^389232490 is an apocalyptic number.

389232490 is a deficient number, since it is larger than the sum of its proper divisors (335545790).

389232490 is a wasteful number, since it uses less digits than its factorization.

389232490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342217.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 389232490 is about 19728.9758984089. The cubic root of 389232490 is about 730.1347658867.

The spelling of 389232490 in words is "three hundred eighty-nine million, two hundred thirty-two thousand, four hundred ninety".