992447 has 4 divisors (see below), whose sum is σ = 994680. Its totient is φ = 990216.

The previous prime is 992441. The next prime is 992449. The reversal of 992447 is 744299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744299 = 277 ⋅2687.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-992447 is a prime.

It is an Ulam 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 (992441) 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, 197 + ... + 1422.

It is an arithmetic number, because the mean of its divisors is an integer number (248670).

2⁹⁹²⁴⁴⁷ is an apocalyptic number.

992447 is the 533-rd centered heptagonal number.

992447 is a deficient number, since it is larger than the sum of its proper divisors (2233).

992447 is a wasteful number, since it uses less digits than its factorization.

992447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232.

The product of its digits is 18144, while the sum is 35.

The square root of 992447 is about 996.2163419659. The cubic root of 992447 is about 99.7475967956.

The spelling of 992447 in words is "nine hundred ninety-two thousand, four hundred forty-seven".