208946 has 4 divisors (see below), whose sum is σ = 313422. Its totient is φ = 104472.

The previous prime is 208933. The next prime is 208961. The reversal of 208946 is 649802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 649802 = 2 ⋅324901.

It can be written as a sum of positive squares in only one way, i.e., 112225 + 96721 = 335^2 + 311^2 .

It is an unprimeable number.

208946 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52235 + ... + 52238.

2²⁰⁸⁹⁴⁶ is an apocalyptic number.

208946 is a deficient number, since it is larger than the sum of its proper divisors (104476).

208946 is a wasteful number, since it uses less digits than its factorization.

208946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104475.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 208946 is about 457.1061145948. The cubic root of 208946 is about 59.3396099351.

The spelling of 208946 in words is "two hundred eight thousand, nine hundred forty-six".