206890449 has 8 divisors (see below), whose sum is σ = 290372640. Its totient is φ = 130667616.

The previous prime is 206890423. The next prime is 206890499. The reversal of 206890449 is 944098602.

206890449 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 206890449 - 2⁵ = 206890417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206890449.

It is not an unprimeable number, because it can be changed into a prime (206890499) 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, 1814772 + ... + 1814885.

It is an arithmetic number, because the mean of its divisors is an integer number (36296580).

Almost surely, 2^206890449 is an apocalyptic number.

It is an amenable number.

206890449 is a deficient number, since it is larger than the sum of its proper divisors (83482191).

206890449 is a wasteful number, since it uses less digits than its factorization.

206890449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629679.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 206890449 is about 14383.6869056581. The cubic root of 206890449 is about 591.4437961711.

The spelling of 206890449 in words is "two hundred six million, eight hundred ninety thousand, four hundred forty-nine".