208221446 has 4 divisors (see below), whose sum is σ = 312332172. Its totient is φ = 104110722.

The previous prime is 208221383. The next prime is 208221449. The reversal of 208221446 is 644122802.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208221449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52055360 + ... + 52055363.

It is an arithmetic number, because the mean of its divisors is an integer number (78083043).

Almost surely, 2^208221446 is an apocalyptic number.

208221446 is a deficient number, since it is larger than the sum of its proper divisors (104110726).

208221446 is a wasteful number, since it uses less digits than its factorization.

208221446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104110725.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 208221446 is about 14429.8803182840. The cubic root of 208221446 is about 592.7094060623.

The spelling of 208221446 in words is "two hundred eight million, two hundred twenty-one thousand, four hundred forty-six".