199089013 has 2 divisors, whose sum is σ = 199089014. Its totient is φ = 199089012.

The previous prime is 199088993. The next prime is 199089043. The reversal of 199089013 is 310980991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178676689 + 20412324 = 13367^2 + 4518^2 .

It is an emirp because it is prime and its reverse (310980991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199089013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199089043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99544506 + 99544507.

It is an arithmetic number, because the mean of its divisors is an integer number (99544507).

Almost surely, 2^199089013 is an apocalyptic number.

It is an amenable number.

199089013 is a deficient number, since it is larger than the sum of its proper divisors (1).

199089013 is an equidigital number, since it uses as much as digits as its factorization.

199089013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 199089013 is about 14109.8906090728. The cubic root of 199089013 is about 583.9142820414.

The spelling of 199089013 in words is "one hundred ninety-nine million, eighty-nine thousand, thirteen".