1989934 has 8 divisors (see below), whose sum is σ = 3065688. Its totient is φ = 968040.

The previous prime is 1989919. The next prime is 1989947. The reversal of 1989934 is 4399891.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13372 + ... + 13519.

It is an arithmetic number, because the mean of its divisors is an integer number (383211).

2^1989934 is an apocalyptic number.

1989934 is a deficient number, since it is larger than the sum of its proper divisors (1075754).

1989934 is a wasteful number, since it uses less digits than its factorization.

1989934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26930.

The product of its digits is 69984, while the sum is 43.

The square root of 1989934 is about 1410.6502046929. The cubic root of 1989934 is about 125.7803766268.

Subtracting from 1989934 its sum of digits (43), we obtain a palindrome (1989891).

The spelling of 1989934 in words is "one million, nine hundred eighty-nine thousand, nine hundred thirty-four".