1992097 has 8 divisors (see below), whose sum is σ = 2091240. Its totient is φ = 1895040.

The previous prime is 1992079. The next prime is 1992101. The reversal of 1992097 is 7902991.

It can be written as a sum of positive squares in 4 ways, for example, as 456976 + 1535121 = 676^2 + 1239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1992097 is a prime.

It is a Duffinian number.

1992097 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1992197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1647 + ... + 2587.

It is an arithmetic number, because the mean of its divisors is an integer number (261405).

2^1992097 is an apocalyptic number.

It is an amenable number.

1992097 is a deficient number, since it is larger than the sum of its proper divisors (99143).

1992097 is an equidigital number, since it uses as much as digits as its factorization.

1992097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 1992097 is about 1411.4166642066. The cubic root of 1992097 is about 125.8259333202.

Subtracting from 1992097 its product of nonzero digits (10206), we obtain a palindrome (1981891).

The spelling of 1992097 in words is "one million, nine hundred ninety-two thousand, ninety-seven".