198614397 has 4 divisors (see below), whose sum is σ = 264819200. Its totient is φ = 132409596.

The previous prime is 198614393. The next prime is 198614401. The reversal of 198614397 is 793416891.

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, and also an emirpimes, since its reverse is a distinct semiprime: 793416891 = 3 ⋅264472297.

It is an interprime number because it is at equal distance from previous prime (198614393) and next prime (198614401).

It is not a de Polignac number, because 198614397 - 2² = 198614393 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 (198614393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33102397 + ... + 33102402.

It is an arithmetic number, because the mean of its divisors is an integer number (66204800).

Almost surely, 2^198614397 is an apocalyptic number.

It is an amenable number.

198614397 is a deficient number, since it is larger than the sum of its proper divisors (66204803).

198614397 is an equidigital number, since it uses as much as digits as its factorization.

198614397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66204802.

The product of its digits is 326592, while the sum is 48.

The square root of 198614397 is about 14093.0620164675. The cubic root of 198614397 is about 583.4499075502.

The spelling of 198614397 in words is "one hundred ninety-eight million, six hundred fourteen thousand, three hundred ninety-seven".