198890347 has 8 divisors (see below), whose sum is σ = 211712400. Its totient is φ = 186303744.

The previous prime is 198890297. The next prime is 198890353. The reversal of 198890347 is 743098891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198890347 - 2¹¹ = 198888299 is a prime.

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 198890347.

It is not an unprimeable number, because it can be changed into a prime (198890047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57118 + ... + 60499.

It is an arithmetic number, because the mean of its divisors is an integer number (26464050).

Almost surely, 2^198890347 is an apocalyptic number.

198890347 is a deficient number, since it is larger than the sum of its proper divisors (12822053).

198890347 is a wasteful number, since it uses less digits than its factorization.

198890347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117725.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 198890347 is about 14102.8488965882. The cubic root of 198890347 is about 583.7199928635.

Subtracting from 198890347 its product of nonzero digits (435456), we obtain a palindrome (198454891).

The spelling of 198890347 in words is "one hundred ninety-eight million, eight hundred ninety thousand, three hundred forty-seven".