2237986 has 4 divisors (see below), whose sum is σ = 3356982. Its totient is φ = 1118992.

The previous prime is 2237957. The next prime is 2238011. The reversal of 2237986 is 6897322.

2237986 is nontrivially palindromic in base 4.

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., 2205225 + 32761 = 1485^2 + 181^2 .

It is an unprimeable number.

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, 559495 + ... + 559498.

2^2237986 is an apocalyptic number.

2237986 is a deficient number, since it is larger than the sum of its proper divisors (1118996).

2237986 is a wasteful number, since it uses less digits than its factorization.

2237986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118995.

The product of its digits is 36288, while the sum is 37.

The square root of 2237986 is about 1495.9899732284. The cubic root of 2237986 is about 130.8034267947.

It can be divided in two parts, 2237 and 986, that added together give a palindrome (3223).

The spelling of 2237986 in words is "two million, two hundred thirty-seven thousand, nine hundred eighty-six".