389631489 has 8 divisors (see below), whose sum is σ = 559470912. Its totient is φ = 239773200.

The previous prime is 389631439. The next prime is 389631503. The reversal of 389631489 is 984136983.

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

It is not a de Polignac number, because 389631489 - 2¹² = 389627393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389631419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4995237 + ... + 4995314.

It is an arithmetic number, because the mean of its divisors is an integer number (69933864).

Almost surely, 2^389631489 is an apocalyptic number.

389631489 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

389631489 is a deficient number, since it is larger than the sum of its proper divisors (169839423).

389631489 is a wasteful number, since it uses less digits than its factorization.

389631489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9990567.

The product of its digits is 1119744, while the sum is 51.

The square root of 389631489 is about 19739.0853131547. The cubic root of 389631489 is about 730.3841657196.

The spelling of 389631489 in words is "three hundred eighty-nine million, six hundred thirty-one thousand, four hundred eighty-nine".