1992939 has 16 divisors (see below), whose sum is σ = 2890272. Its totient is φ = 1214208.

The previous prime is 1992937. The next prime is 1992953. The reversal of 1992939 is 9392991.

It is a happy number.

It is not a de Polignac number, because 1992939 - 2¹ = 1992937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1992939.

It is not an unprimeable number, because it can be changed into a prime (1992937) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5157 + ... + 5529.

It is an arithmetic number, because the mean of its divisors is an integer number (180642).

2^1992939 is an apocalyptic number.

1992939 is a deficient number, since it is larger than the sum of its proper divisors (897333).

1992939 is a wasteful number, since it uses less digits than its factorization.

1992939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its digits is 39366, while the sum is 42.

The square root of 1992939 is about 1411.7149145631. The cubic root of 1992939 is about 125.8436584465.

The spelling of 1992939 in words is "one million, nine hundred ninety-two thousand, nine hundred thirty-nine".