198412447 has 2 divisors, whose sum is σ = 198412448. Its totient is φ = 198412446.

The previous prime is 198412429. The next prime is 198412453. The reversal of 198412447 is 744214891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198412447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198412477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99206223 + 99206224.

It is an arithmetic number, because the mean of its divisors is an integer number (99206224).

Almost surely, 2^198412447 is an apocalyptic number.

198412447 is a deficient number, since it is larger than the sum of its proper divisors (1).

198412447 is an equidigital number, since it uses as much as digits as its factorization.

198412447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 40.

The square root of 198412447 is about 14085.8953212070. The cubic root of 198412447 is about 583.2520909623.

The spelling of 198412447 in words is "one hundred ninety-eight million, four hundred twelve thousand, four hundred forty-seven".