206989894 has 32 divisors (see below), whose sum is σ = 325967040. Its totient is φ = 98496000.

The previous prime is 206989891. The next prime is 206989901. The reversal of 206989894 is 498989602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206989891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 903772 + ... + 904000.

It is an arithmetic number, because the mean of its divisors is an integer number (10186470).

Almost surely, 2^206989894 is an apocalyptic number.

206989894 is a deficient number, since it is larger than the sum of its proper divisors (118977146).

206989894 is a wasteful number, since it uses less digits than its factorization.

206989894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The square root of 206989894 is about 14387.1433578734. The cubic root of 206989894 is about 591.5385431052.

The spelling of 206989894 in words is "two hundred six million, nine hundred eighty-nine thousand, eight hundred ninety-four".