199954135 has 8 divisors (see below), whose sum is σ = 242982720. Its totient is φ = 157938144.

The previous prime is 199954133. The next prime is 199954147. The reversal of 199954135 is 531459991.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 199954135 - 2¹ = 199954133 is a prime.

It is a super-2 number, since 2×199954135² = 79963312207196450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199954133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252712 + ... + 253501.

It is an arithmetic number, because the mean of its divisors is an integer number (30372840).

Almost surely, 2^199954135 is an apocalyptic number.

199954135 is a deficient number, since it is larger than the sum of its proper divisors (43028585).

199954135 is an equidigital number, since it uses as much as digits as its factorization.

199954135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506297.

The product of its digits is 218700, while the sum is 46.

The square root of 199954135 is about 14140.5139581275. The cubic root of 199954135 is about 584.7588408671.

The spelling of 199954135 in words is "one hundred ninety-nine million, nine hundred fifty-four thousand, one hundred thirty-five".