198399475 has 6 divisors (see below), whose sum is σ = 246015380. Its totient is φ = 158719560.

The previous prime is 198399457. The next prime is 198399491. The reversal of 198399475 is 574993891.

It is not a de Polignac number, because 198399475 - 2¹³ = 198391283 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3967965 + ... + 3968014.

Almost surely, 2^198399475 is an apocalyptic number.

198399475 is a deficient number, since it is larger than the sum of its proper divisors (47615905).

198399475 is an equidigital number, since it uses as much as digits as its factorization.

198399475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7935989 (or 7935984 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 55.

The square root of 198399475 is about 14085.4348530672. The cubic root of 198399475 is about 583.2393798797.

The spelling of 198399475 in words is "one hundred ninety-eight million, three hundred ninety-nine thousand, four hundred seventy-five".