997192 has 16 divisors (see below), whose sum is σ = 2136960. Its totient is φ = 427344.

The previous prime is 997163. The next prime is 997201. The reversal of 997192 is 291799.

It is an Ulam number.

It is an unprimeable number.

997192 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8848 + ... + 8959.

It is an arithmetic number, because the mean of its divisors is an integer number (133560).

2⁹⁹⁷¹⁹² is an apocalyptic number.

It is an amenable number.

997192 is an abundant number, since it is smaller than the sum of its proper divisors (1139768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997192 is a wasteful number, since it uses less digits than its factorization.

997192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17820 (or 17816 counting only the distinct ones).

The product of its digits is 10206, while the sum is 37.

The square root of 997192 is about 998.5950130058. The cubic root of 997192 is about 99.9063122535.

The spelling of 997192 in words is "nine hundred ninety-seven thousand, one hundred ninety-two".