209799006 has 16 divisors (see below), whose sum is σ = 444280464. Its totient is φ = 65819264.

The previous prime is 209798999. The next prime is 209799011. The reversal of 209799006 is 600997902.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 7 ways as a sum of consecutive naturals, for example, 1028325 + ... + 1028528.

It is an arithmetic number, because the mean of its divisors is an integer number (27767529).

Almost surely, 2^209799006 is an apocalyptic number.

209799006 is an abundant number, since it is smaller than the sum of its proper divisors (234481458).

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

209799006 is a wasteful number, since it uses less digits than its factorization.

209799006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056875.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 209799006 is about 14484.4401341578. The cubic root of 209799006 is about 594.2025009899.

The spelling of 209799006 in words is "two hundred nine million, seven hundred ninety-nine thousand, six".