199408503 has 16 divisors (see below), whose sum is σ = 312074240. Its totient is φ = 110867616.

The previous prime is 199408499. The next prime is 199408511. The reversal of 199408503 is 305804991.

It is not a de Polignac number, because 199408503 - 2² = 199408499 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 (199408513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127543 + ... + 129096.

It is an arithmetic number, because the mean of its divisors is an integer number (19504640).

Almost surely, 2^199408503 is an apocalyptic number.

199408503 is a deficient number, since it is larger than the sum of its proper divisors (112665737).

199408503 is a wasteful number, since it uses less digits than its factorization.

199408503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256686.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 199408503 is about 14121.2075616783. The cubic root of 199408503 is about 584.2264624545.

The spelling of 199408503 in words is "one hundred ninety-nine million, four hundred eight thousand, five hundred three".