4266639 has 12 divisors (see below), whose sum is σ = 6637176. Its totient is φ = 2625552.

The previous prime is 4266637. The next prime is 4266667. The reversal of 4266639 is 9366624.

It is not a de Polignac number, because 4266639 - 2¹ = 4266637 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4266637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18117 + ... + 18350.

It is an arithmetic number, because the mean of its divisors is an integer number (553098).

Almost surely, 2^4266639 is an apocalyptic number.

4266639 is a deficient number, since it is larger than the sum of its proper divisors (2370537).

4266639 is a wasteful number, since it uses less digits than its factorization.

4266639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36486 (or 36483 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 4266639 is about 2065.5844209327. The cubic root of 4266639 is about 162.1917026432.

The spelling of 4266639 in words is "four million, two hundred sixty-six thousand, six hundred thirty-nine".