1992271 has 4 divisors (see below), whose sum is σ = 2061000. Its totient is φ = 1923544.

The previous prime is 1992269. The next prime is 1992299. The reversal of 1992271 is 1722991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1992271 - 2¹ = 1992269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992241) 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 3 ways as a sum of consecutive naturals, for example, 34321 + ... + 34378.

It is an arithmetic number, because the mean of its divisors is an integer number (515250).

2^1992271 is an apocalyptic number.

1992271 is a deficient number, since it is larger than the sum of its proper divisors (68729).

1992271 is an equidigital number, since it uses as much as digits as its factorization.

1992271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68728.

The product of its digits is 2268, while the sum is 31.

The square root of 1992271 is about 1411.4783030568. The cubic root of 1992271 is about 125.8295966416.

The spelling of 1992271 in words is "one million, nine hundred ninety-two thousand, two hundred seventy-one".