198969 has 8 divisors (see below), whose sum is σ = 274560. Its totient is φ = 128016.

The previous prime is 198967. The next prime is 198971. The reversal of 198969 is 969891.

It is an interprime number because it is at equal distance from previous prime (198967) and next prime (198971).

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

It is not a de Polignac number, because 198969 - 2¹ = 198967 is a prime.

It is a super-2 number, since 2×198969² = 79177325922, which contains 22 as substring.

It is a Curzon number.

198969 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 198969.

It is not an unprimeable number, because it can be changed into a prime (198967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1057 + ... + 1230.

It is an arithmetic number, because the mean of its divisors is an integer number (34320).

2¹⁹⁸⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

198969 is a deficient number, since it is larger than the sum of its proper divisors (75591).

198969 is a wasteful number, since it uses less digits than its factorization.

198969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319.

The product of its digits is 34992, while the sum is 42.

The square root of 198969 is about 446.0594130831. The cubic root of 198969 is about 58.3796928519.

The spelling of 198969 in words is "one hundred ninety-eight thousand, nine hundred sixty-nine".