199466405 has 8 divisors (see below), whose sum is σ = 240744312. Its totient is φ = 158650048.

The previous prime is 199466359. The next prime is 199466429. The reversal of 199466405 is 504664991.

It can be written as a sum of positive squares in 4 ways, for example, as 119202724 + 80263681 = 10918^2 + 8959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199466405 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114434 + ... + 116163.

It is an arithmetic number, because the mean of its divisors is an integer number (30093039).

Almost surely, 2^199466405 is an apocalyptic number.

It is an amenable number.

199466405 is a deficient number, since it is larger than the sum of its proper divisors (41277907).

199466405 is a wasteful number, since it uses less digits than its factorization.

199466405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230775.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 199466405 is about 14123.2575916465. The cubic root of 199466405 is about 584.2830040203.

The spelling of 199466405 in words is "one hundred ninety-nine million, four hundred sixty-six thousand, four hundred five".