4392986 has 24 divisors (see below), whose sum is σ = 7332444. Its totient is φ = 1971840.

The previous prime is 4392937. The next prime is 4393001. The reversal of 4392986 is 6892934.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 112225 + 4280761 = 335^2 + 2069^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a nialpdrome in base 13.

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 in 11 ways as a sum of consecutive naturals, for example, 13700 + ... + 14016.

Almost surely, 2^4392986 is an apocalyptic number.

4392986 is a deficient number, since it is larger than the sum of its proper divisors (2939458).

4392986 is a wasteful number, since it uses less digits than its factorization.

4392986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 373 counting only the distinct ones).

The product of its digits is 93312, while the sum is 41.

The square root of 4392986 is about 2095.9451328697. The cubic root of 4392986 is about 163.7771363065. Note that the first 3 decimals are identical.

The spelling of 4392986 in words is "four million, three hundred ninety-two thousand, nine hundred eighty-six".