198083947 has 2 divisors, whose sum is σ = 198083948. Its totient is φ = 198083946.

The previous prime is 198083939. The next prime is 198083969. The reversal of 198083947 is 749380891.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198083947 - 2³ = 198083939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198083947.

It is not a weakly prime, because it can be changed into another prime (198083047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99041973 + 99041974.

It is an arithmetic number, because the mean of its divisors is an integer number (99041974).

Almost surely, 2^198083947 is an apocalyptic number.

198083947 is a deficient number, since it is larger than the sum of its proper divisors (1).

198083947 is an equidigital number, since it uses as much as digits as its factorization.

198083947 is an evil number, because the sum of its binary digits is even.

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

The square root of 198083947 is about 14074.2298901219. The cubic root of 198083947 is about 582.9300275845.

The spelling of 198083947 in words is "one hundred ninety-eight million, eighty-three thousand, nine hundred forty-seven".