198484279 has 16 divisors (see below), whose sum is σ = 239500800. Its totient is φ = 160687584.

The previous prime is 198484249. The next prime is 198484331. The reversal of 198484279 is 972484891.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 198484279 - 2¹⁵ = 198451511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198484219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45669 + ... + 49825.

It is an arithmetic number, because the mean of its divisors is an integer number (14968800).

Almost surely, 2^198484279 is an apocalyptic number.

198484279 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

198484279 is a deficient number, since it is larger than the sum of its proper divisors (41016521).

198484279 is a wasteful number, since it uses less digits than its factorization.

198484279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4542.

The product of its digits is 1161216, while the sum is 52.

The square root of 198484279 is about 14088.4448751450. Note that the first 3 decimals coincide. The cubic root of 198484279 is about 583.3224681151.

The spelling of 198484279 in words is "one hundred ninety-eight million, four hundred eighty-four thousand, two hundred seventy-nine".