199204213 has 4 divisors (see below), whose sum is σ = 214527628. Its totient is φ = 183880800.

The previous prime is 199204207. The next prime is 199204231. The reversal of 199204213 is 312402991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105637284 + 93566929 = 10278^2 + 9673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199204213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199204513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7661688 + ... + 7661713.

It is an arithmetic number, because the mean of its divisors is an integer number (53631907).

Almost surely, 2^199204213 is an apocalyptic number.

199204213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

199204213 is a deficient number, since it is larger than the sum of its proper divisors (15323415).

199204213 is a wasteful number, since it uses less digits than its factorization.

199204213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15323414.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 199204213 is about 14113.9722615570. The cubic root of 199204213 is about 584.0268848651.

The spelling of 199204213 in words is "one hundred ninety-nine million, two hundred four thousand, two hundred thirteen".