209994006 has 8 divisors (see below), whose sum is σ = 419988024. Its totient is φ = 69998000.

The previous prime is 209993989. The next prime is 209994007. The reversal of 209994006 is 600499902.

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

209994006 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209994007) 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, 17499495 + ... + 17499506.

It is an arithmetic number, because the mean of its divisors is an integer number (52498503).

Almost surely, 2^209994006 is an apocalyptic number.

209994006 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209994006 is a wasteful number, since it uses less digits than its factorization.

209994006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34999006.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 209994006 is about 14491.1699320655. The cubic root of 209994006 is about 594.3865400053.

The spelling of 209994006 in words is "two hundred nine million, nine hundred ninety-four thousand, six".