208949621 has 8 divisors (see below), whose sum is σ = 214447200. Its totient is φ = 203517360.

The previous prime is 208949603. The next prime is 208949627. The reversal of 208949621 is 126949802.

208949621 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 208949621 - 2⁶ = 208949557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208949627) 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, 9815 + ... + 22676.

It is an arithmetic number, because the mean of its divisors is an integer number (26805900).

Almost surely, 2^208949621 is an apocalyptic number.

It is an amenable number.

208949621 is a deficient number, since it is larger than the sum of its proper divisors (5497579).

208949621 is a wasteful number, since it uses less digits than its factorization.

208949621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32659.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 208949621 is about 14455.0897956395. The cubic root of 208949621 is about 593.3995271505.

The spelling of 208949621 in words is "two hundred eight million, nine hundred forty-nine thousand, six hundred twenty-one".