199993355 has 32 divisors (see below), whose sum is σ = 260475264. Its totient is φ = 146866176.

The previous prime is 199993333. The next prime is 199993357. The reversal of 199993355 is 553399991.

It is a cyclic number.

It is not a de Polignac number, because 199993355 - 2⁸ = 199993099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199993297 and 199993306.

It is not an unprimeable number, because it can be changed into a prime (199993357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1036139 + ... + 1036331.

It is an arithmetic number, because the mean of its divisors is an integer number (8139852).

Almost surely, 2^199993355 is an apocalyptic number.

199993355 is a deficient number, since it is larger than the sum of its proper divisors (60481909).

199993355 is a wasteful number, since it uses less digits than its factorization.

199993355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455.

The product of its digits is 1476225, while the sum is 53.

The square root of 199993355 is about 14141.9006855514. The cubic root of 199993355 is about 584.7970708716.

The spelling of 199993355 in words is "one hundred ninety-nine million, nine hundred ninety-three thousand, three hundred fifty-five".