209894983 has 8 divisors (see below), whose sum is σ = 212007776. Its totient is φ = 207792000.

The previous prime is 209894981. The next prime is 209894989. The reversal of 209894983 is 389498902.

209894983 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 a cyclic number.

It is not a de Polignac number, because 209894983 - 2¹ = 209894981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 209894983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209894981) 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, 45043 + ... + 49483.

It is an arithmetic number, because the mean of its divisors is an integer number (26500972).

Almost surely, 2^209894983 is an apocalyptic number.

209894983 is a deficient number, since it is larger than the sum of its proper divisors (2112793).

209894983 is a wasteful number, since it uses less digits than its factorization.

209894983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4905.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The square root of 209894983 is about 14487.7528623317. The cubic root of 209894983 is about 594.2930973504.

The spelling of 209894983 in words is "two hundred nine million, eight hundred ninety-four thousand, nine hundred eighty-three".