4421986 has 4 divisors (see below), whose sum is σ = 6632982. Its totient is φ = 2210992.

The previous prime is 4421971. The next prime is 4421987. The reversal of 4421986 is 6891244.

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., 4124961 + 297025 = 2031^2 + 545^2 .

It is not an unprimeable number, because it can be changed into a prime (4421987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105495 + ... + 1105498.

Almost surely, 2^4421986 is an apocalyptic number.

4421986 is a deficient number, since it is larger than the sum of its proper divisors (2210996).

4421986 is a wasteful number, since it uses less digits than its factorization.

4421986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210995.

The product of its digits is 13824, while the sum is 34.

The square root of 4421986 is about 2102.8518730524. The cubic root of 4421986 is about 164.1367340733.

The spelling of 4421986 in words is "four million, four hundred twenty-one thousand, nine hundred eighty-six".