209948246 has 8 divisors (see below), whose sum is σ = 315002520. Its totient is φ = 104947408.

The previous prime is 209948239. The next prime is 209948287. The reversal of 209948246 is 642849902.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 209948197 and 209948206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391 + ... + 20538.

It is an arithmetic number, because the mean of its divisors is an integer number (39375315).

Almost surely, 2^209948246 is an apocalyptic number.

209948246 is a deficient number, since it is larger than the sum of its proper divisors (105054274).

209948246 is a wasteful number, since it uses less digits than its factorization.

209948246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26718.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 209948246 is about 14489.5909535087. The cubic root of 209948246 is about 594.3433624174.

The spelling of 209948246 in words is "two hundred nine million, nine hundred forty-eight thousand, two hundred forty-six".