1989374 has 8 divisors (see below), whose sum is σ = 3159648. Its totient is φ = 936160.

The previous prime is 1989353. The next prime is 1989401. The reversal of 1989374 is 4739891.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29222 + ... + 29289.

It is an arithmetic number, because the mean of its divisors is an integer number (394956).

2^1989374 is an apocalyptic number.

1989374 is a deficient number, since it is larger than the sum of its proper divisors (1170274).

1989374 is a wasteful number, since it uses less digits than its factorization.

1989374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58530.

The product of its digits is 54432, while the sum is 41.

The square root of 1989374 is about 1410.4517006973. The cubic root of 1989374 is about 125.7685766342.

The spelling of 1989374 in words is "one million, nine hundred eighty-nine thousand, three hundred seventy-four".