198916469 has 4 divisors (see below), whose sum is σ = 198961344. Its totient is φ = 198871596.

The previous prime is 198916457. The next prime is 198916537. The reversal of 198916469 is 964619891.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 198916469 - 2²⁰ = 197867893 is a prime.

It is a super-2 number, since 2×198916469² = 79135523278855922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198916469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198916169) 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, 14957 + ... + 24930.

It is an arithmetic number, because the mean of its divisors is an integer number (49740336).

Almost surely, 2^198916469 is an apocalyptic number.

It is an amenable number.

198916469 is a deficient number, since it is larger than the sum of its proper divisors (44875).

198916469 is an equidigital number, since it uses as much as digits as its factorization.

198916469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44874.

The product of its digits is 839808, while the sum is 53.

The square root of 198916469 is about 14103.7749911150. The cubic root of 198916469 is about 583.7455467535.

The spelling of 198916469 in words is "one hundred ninety-eight million, nine hundred sixteen thousand, four hundred sixty-nine".