1989746 has 16 divisors (see below), whose sum is σ = 3283200. Its totient is φ = 896880.

The previous prime is 1989721. The next prime is 1989769. The reversal of 1989746 is 6479891.

It is a junction number, because it is equal to n+sod(n) for n = 1989697 and 1989706.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2975 + ... + 3581.

It is an arithmetic number, because the mean of its divisors is an integer number (205200).

2^1989746 is an apocalyptic number.

1989746 is a deficient number, since it is larger than the sum of its proper divisors (1293454).

1989746 is a wasteful number, since it uses less digits than its factorization.

1989746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769.

The product of its digits is 108864, while the sum is 44.

The square root of 1989746 is about 1410.5835671806. The cubic root of 1989746 is about 125.7764154476.

The spelling of 1989746 in words is "one million, nine hundred eighty-nine thousand, seven hundred forty-six".