992091 has 4 divisors (see below), whose sum is σ = 1322792. Its totient is φ = 661392.

The previous prime is 992087. The next prime is 992111. The reversal of 992091 is 190299.

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

It is not a de Polignac number, because 992091 - 2² = 992087 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 (992011) 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, 165346 + ... + 165351.

It is an arithmetic number, because the mean of its divisors is an integer number (330698).

2⁹⁹²⁰⁹¹ is an apocalyptic number.

992091 is a deficient number, since it is larger than the sum of its proper divisors (330701).

992091 is a wasteful number, since it uses less digits than its factorization.

992091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330700.

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

The square root of 992091 is about 996.0376498908. The cubic root of 992091 is about 99.7356685713.

It can be divided in two parts, 9920 and 91, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 992091 in words is "nine hundred ninety-two thousand, ninety-one".