199949467 has 2 divisors, whose sum is σ = 199949468. Its totient is φ = 199949466.

The previous prime is 199949459. The next prime is 199949479. The reversal of 199949467 is 764949991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199949467 - 2³ = 199949459 is a prime.

It is not a weakly prime, because it can be changed into another prime (199940467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99974733 + 99974734.

It is an arithmetic number, because the mean of its divisors is an integer number (99974734).

Almost surely, 2^199949467 is an apocalyptic number.

199949467 is a deficient number, since it is larger than the sum of its proper divisors (1).

199949467 is an equidigital number, since it uses as much as digits as its factorization.

199949467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 58.

The square root of 199949467 is about 14140.3488995145. The cubic root of 199949467 is about 584.7542903644.

The spelling of 199949467 in words is "one hundred ninety-nine million, nine hundred forty-nine thousand, four hundred sixty-seven".