1989392 has 10 divisors (see below), whose sum is σ = 3854478. Its totient is φ = 994688.

The previous prime is 1989353. The next prime is 1989401. The reversal of 1989392 is 2939891.

It can be written as a sum of positive squares in only one way, i.e., 1290496 + 698896 = 1136^2 + 836^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62153 + ... + 62184.

2^1989392 is an apocalyptic number.

It is an amenable number.

1989392 is a deficient number, since it is larger than the sum of its proper divisors (1865086).

1989392 is a wasteful number, since it uses less digits than its factorization.

1989392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124345 (or 124339 counting only the distinct ones).

The product of its digits is 34992, while the sum is 41.

The square root of 1989392 is about 1410.4580816175. The cubic root of 1989392 is about 125.7689559541.

The spelling of 1989392 in words is "one million, nine hundred eighty-nine thousand, three hundred ninety-two".