1198992 has 20 divisors (see below), whose sum is σ = 3097520. Its totient is φ = 399648.

The previous prime is 1198991. The next prime is 1198997. The reversal of 1198992 is 2998911.

It is a happy number.

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 1198992.

It is not an unprimeable number, because it can be changed into a prime (1198991) 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, 12442 + ... + 12537.

It is an arithmetic number, because the mean of its divisors is an integer number (154876).

2^1198992 is an apocalyptic number.

1198992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1198992 is an abundant number, since it is smaller than the sum of its proper divisors (1898528).

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

1198992 is a wasteful number, since it uses less digits than its factorization.

1198992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24990 (or 24984 counting only the distinct ones).

The product of its digits is 11664, while the sum is 39.

The square root of 1198992 is about 1094.9849314032. The cubic root of 1198992 is about 106.2360941432.

The spelling of 1198992 in words is "one million, one hundred ninety-eight thousand, nine hundred ninety-two".