2249986 has 4 divisors (see below), whose sum is σ = 3374982. Its totient is φ = 1124992.

The previous prime is 2249983. The next prime is 2249987. The reversal of 2249986 is 6899422.

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

It can be written as a sum of positive squares in only one way, i.e., 1311025 + 938961 = 1145^2 + 969^2 .

It is a d-powerful number, because it can be written as 2⁷ + 2¹⁹ + 4³ + 9⁴ + 9⁴ + 8⁵ + 6⁸ .

It is not an unprimeable number, because it can be changed into a prime (2249981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562495 + ... + 562498.

2^2249986 is an apocalyptic number.

2249986 is a deficient number, since it is larger than the sum of its proper divisors (1124996).

2249986 is a wasteful number, since it uses less digits than its factorization.

2249986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124995.

The product of its digits is 62208, while the sum is 40.

The square root of 2249986 is about 1499.9953333261. The cubic root of 2249986 is about 131.0367979293.

The spelling of 2249986 in words is "two million, two hundred forty-nine thousand, nine hundred eighty-six".