199901859 has 8 divisors (see below), whose sum is σ = 268894992. Its totient is φ = 132088320.

The previous prime is 199901851. The next prime is 199901879. The reversal of 199901859 is 958109991.

199901859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 199901859 - 2³ = 199901851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199901851) 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, 294502 + ... + 295179.

It is an arithmetic number, because the mean of its divisors is an integer number (33611874).

Almost surely, 2^199901859 is an apocalyptic number.

199901859 is a deficient number, since it is larger than the sum of its proper divisors (68993133).

199901859 is a wasteful number, since it uses less digits than its factorization.

199901859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589797.

The product of its (nonzero) digits is 262440, while the sum is 51.

The square root of 199901859 is about 14138.6653896328. The cubic root of 199901859 is about 584.7078766505.

The spelling of 199901859 in words is "one hundred ninety-nine million, nine hundred one thousand, eight hundred fifty-nine".