992491 has 4 divisors (see below), whose sum is σ = 996352. Its totient is φ = 988632.

The previous prime is 992461. The next prime is 992513. The reversal of 992491 is 194299.

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 992491 - 2⁷ = 992363 is a prime.

It is an Ulam number.

It is a Duffinian number.

992491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (992441) 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, 1515 + ... + 2068.

It is an arithmetic number, because the mean of its divisors is an integer number (249088).

2⁹⁹²⁴⁹¹ is an apocalyptic number.

992491 is a deficient number, since it is larger than the sum of its proper divisors (3861).

992491 is a wasteful number, since it uses less digits than its factorization.

992491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3860.

The product of its digits is 5832, while the sum is 34.

The square root of 992491 is about 996.2384252778. The cubic root of 992491 is about 99.7490708724.

The spelling of 992491 in words is "nine hundred ninety-two thousand, four hundred ninety-one".