2209986 has 12 divisors (see below), whose sum is σ = 4788342. Its totient is φ = 736656.

The previous prime is 2209979. The next prime is 2209993. The reversal of 2209986 is 6899022.

It is an interprime number because it is at equal distance from previous prime (2209979) and next prime (2209993).

It can be written as a sum of positive squares in only one way, i.e., 2205225 + 4761 = 1485^2 + 69^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2209986.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61371 + ... + 61406.

2^2209986 is an apocalyptic number.

2209986 is an abundant number, since it is smaller than the sum of its proper divisors (2578356).

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

2209986 is a wasteful number, since it uses less digits than its factorization.

2209986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122785 (or 122782 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2209986 is about 1486.6021660148. The cubic root of 2209986 is about 130.2556311215.

The spelling of 2209986 in words is "two million, two hundred nine thousand, nine hundred eighty-six".