992109 has 4 divisors (see below), whose sum is σ = 1322816. Its totient is φ = 661404.

The previous prime is 992087. The next prime is 992111. The reversal of 992109 is 901299.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 992109 - 2⁷ = 991981 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165349 + ... + 165354.

It is an arithmetic number, because the mean of its divisors is an integer number (330704).

2⁹⁹²¹⁰⁹ is an apocalyptic number.

It is an amenable number.

992109 is a deficient number, since it is larger than the sum of its proper divisors (330707).

992109 is a wasteful number, since it uses less digits than its factorization.

992109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330706.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 992109 is about 996.0466856528. The cubic root of 992109 is about 99.7362717522.

The spelling of 992109 in words is "nine hundred ninety-two thousand, one hundred nine".