208199814 has 32 divisors (see below), whose sum is σ = 428886240. Its totient is φ = 67329792.

The previous prime is 208199809. The next prime is 208199837. The reversal of 208199814 is 418991802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89652 + ... + 91944.

It is an arithmetic number, because the mean of its divisors is an integer number (13402695).

Almost surely, 2^208199814 is an apocalyptic number.

208199814 is an abundant number, since it is smaller than the sum of its proper divisors (220686426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208199814 is a wasteful number, since it uses less digits than its factorization.

208199814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744.

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 208199814 is about 14429.1307430489. The cubic root of 208199814 is about 592.6888799443.

The spelling of 208199814 in words is "two hundred eight million, one hundred ninety-nine thousand, eight hundred fourteen".