199498567 has 2 divisors, whose sum is σ = 199498568. Its totient is φ = 199498566.

The previous prime is 199498549. The next prime is 199498577. The reversal of 199498567 is 765894991.

It is a strong prime.

It is an emirp because it is prime and its reverse (765894991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199498567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199498577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99749283 + 99749284.

It is an arithmetic number, because the mean of its divisors is an integer number (99749284).

Almost surely, 2^199498567 is an apocalyptic number.

199498567 is a deficient number, since it is larger than the sum of its proper divisors (1).

199498567 is an equidigital number, since it uses as much as digits as its factorization.

199498567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 58.

The square root of 199498567 is about 14124.3961640843. The cubic root of 199498567 is about 584.3144056324.

The spelling of 199498567 in words is "one hundred ninety-nine million, four hundred ninety-eight thousand, five hundred sixty-seven".