1992117 has 16 divisors (see below), whose sum is σ = 2768832. Its totient is φ = 1272960.

The previous prime is 1992101. The next prime is 1992119. The reversal of 1992117 is 7112991.

It is not a de Polignac number, because 1992117 - 2⁴ = 1992101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992119) 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, 14473 + ... + 14609.

It is an arithmetic number, because the mean of its divisors is an integer number (173052).

2^1992117 is an apocalyptic number.

It is an amenable number.

1992117 is a deficient number, since it is larger than the sum of its proper divisors (776715).

1992117 is a wasteful number, since it uses less digits than its factorization.

1992117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308.

The product of its digits is 1134, while the sum is 30.

The square root of 1992117 is about 1411.4237492688. The cubic root of 1992117 is about 125.8263544025.

The spelling of 1992117 in words is "one million, nine hundred ninety-two thousand, one hundred seventeen".