208983949 has 4 divisors (see below), whose sum is σ = 213430464. Its totient is φ = 204537436.

The previous prime is 208983937. The next prime is 208983953. The reversal of 208983949 is 949389802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 949389802 = 2 ⋅474694901.

It is a cyclic number.

It is not a de Polignac number, because 208983949 - 2⁵ = 208983917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208983896 and 208983905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208983149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2223187 + ... + 2223280.

It is an arithmetic number, because the mean of its divisors is an integer number (53357616).

Almost surely, 2^208983949 is an apocalyptic number.

It is an amenable number.

208983949 is a deficient number, since it is larger than the sum of its proper divisors (4446515).

208983949 is an equidigital number, since it uses as much as digits as its factorization.

208983949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4446514.

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

The square root of 208983949 is about 14456.2771486991. The cubic root of 208983949 is about 593.4320215917.

The spelling of 208983949 in words is "two hundred eight million, nine hundred eighty-three thousand, nine hundred forty-nine".