198357479 has 8 divisors (see below), whose sum is σ = 210377088. Its totient is φ = 186376960.

The previous prime is 198357463. The next prime is 198357539. The reversal of 198357479 is 974753891.

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 198357479 - 2⁴ = 198357463 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 198357479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198357179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034 + ... + 19944.

It is an arithmetic number, because the mean of its divisors is an integer number (26297136).

Almost surely, 2^198357479 is an apocalyptic number.

198357479 is a deficient number, since it is larger than the sum of its proper divisors (12019609).

198357479 is a wasteful number, since it uses less digits than its factorization.

198357479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19545.

The product of its digits is 1905120, while the sum is 53.

The square root of 198357479 is about 14083.9440143732. The cubic root of 198357479 is about 583.1982247819.

The spelling of 198357479 in words is "one hundred ninety-eight million, three hundred fifty-seven thousand, four hundred seventy-nine".