992987 has 4 divisors (see below), whose sum is σ = 1051416. Its totient is φ = 934560.

The previous prime is 992983. The next prime is 993001. The reversal of 992987 is 789299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789299 = 7 ⋅112757.

It is a cyclic number.

It is not a de Polignac number, because 992987 - 2² = 992983 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (992983) 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, 29189 + ... + 29222.

It is an arithmetic number, because the mean of its divisors is an integer number (262854).

2⁹⁹²⁹⁸⁷ is an apocalyptic number.

992987 is a deficient number, since it is larger than the sum of its proper divisors (58429).

992987 is a wasteful number, since it uses less digits than its factorization.

992987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58428.

The product of its digits is 81648, while the sum is 44.

The square root of 992987 is about 996.4873305768. The cubic root of 992987 is about 99.7656847257.

The spelling of 992987 in words is "nine hundred ninety-two thousand, nine hundred eighty-seven".