992638 has 8 divisors (see below), whose sum is σ = 1499400. Its totient is φ = 492840.

The previous prime is 992633. The next prime is 992659. The reversal of 992638 is 836299.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 992597 and 992606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992633) 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, 1368 + ... + 1963.

It is an arithmetic number, because the mean of its divisors is an integer number (187425).

2⁹⁹²⁶³⁸ is an apocalyptic number.

992638 is a deficient number, since it is larger than the sum of its proper divisors (506762).

992638 is a wasteful number, since it uses less digits than its factorization.

992638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482.

The product of its digits is 23328, while the sum is 37.

The square root of 992638 is about 996.3122000658. The cubic root of 992638 is about 99.7539953132.

It can be divided in two parts, 99 and 2638, that multiplied together give a palindrome (261162).

The spelling of 992638 in words is "nine hundred ninety-two thousand, six hundred thirty-eight".