198444797 has 16 divisors (see below), whose sum is σ = 215006400. Its totient is φ = 182540160.

The previous prime is 198444793. The next prime is 198444811. The reversal of 198444797 is 797444891.

It is a cyclic number.

It is not a de Polignac number, because 198444797 - 2² = 198444793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198444793) 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, 209078 + ... + 210024.

It is an arithmetic number, because the mean of its divisors is an integer number (13437900).

Almost surely, 2^198444797 is an apocalyptic number.

It is an amenable number.

198444797 is a deficient number, since it is larger than the sum of its proper divisors (16561603).

198444797 is a wasteful number, since it uses less digits than its factorization.

198444797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276.

The product of its digits is 2032128, while the sum is 53.

The square root of 198444797 is about 14087.0435862178. The cubic root of 198444797 is about 583.2837878645.

The spelling of 198444797 in words is "one hundred ninety-eight million, four hundred forty-four thousand, seven hundred ninety-seven".