2439666 has 16 divisors (see below), whose sum is σ = 5421600. Its totient is φ = 813204.

The previous prime is 2439649. The next prime is 2439667. The reversal of 2439666 is 6669342.

It is a self number, because there is not a number n which added to its sum of digits gives 2439666.

It is not an unprimeable number, because it can be changed into a prime (2439667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22536 + ... + 22643.

It is an arithmetic number, because the mean of its divisors is an integer number (338850).

2^2439666 is an apocalyptic number.

2439666 is an abundant number, since it is smaller than the sum of its proper divisors (2981934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2439666 is a wasteful number, since it uses less digits than its factorization.

2439666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45190 (or 45184 counting only the distinct ones).

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

The square root of 2439666 is about 1561.9430207277. The cubic root of 2439666 is about 134.6201668798.

The spelling of 2439666 in words is "two million, four hundred thirty-nine thousand, six hundred sixty-six".