373989 has 16 divisors (see below), whose sum is σ = 622080. Its totient is φ = 194160.

The previous prime is 373987. The next prime is 373999. The reversal of 373989 is 989373.

It is a happy number.

It is not a de Polignac number, because 373989 - 2¹ = 373987 is a prime.

It is a Curzon number.

373989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (373981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579 + ... + 1040.

It is an arithmetic number, because the mean of its divisors is an integer number (38880).

2³⁷³⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

373989 is a deficient number, since it is larger than the sum of its proper divisors (248091).

373989 is a wasteful number, since it uses less digits than its factorization.

373989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640.

The product of its digits is 40824, while the sum is 39.

The square root of 373989 is about 611.5464005290. The cubic root of 373989 is about 72.0476151091.

It can be divided in two parts, 3739 and 89, that added together give a triangular number (3828 = T₈₇).

The spelling of 373989 in words is "three hundred seventy-three thousand, nine hundred eighty-nine".