2039864 has 32 divisors (see below), whose sum is σ = 4140720. Its totient is φ = 938496.

The previous prime is 2039857. The next prime is 2039867. The reversal of 2039864 is 4689302.

2039864 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2039864² = 8322090276992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2039864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2039867) 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, 7067 + ... + 7349.

2^2039864 is an apocalyptic number.

It is an amenable number.

2039864 is an abundant number, since it is smaller than the sum of its proper divisors (2100856).

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

2039864 is a wasteful number, since it uses less digits than its factorization.

2039864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2039864 is about 1428.2380753922. The cubic root of 2039864 is about 126.8236956781.

The spelling of 2039864 in words is "two million, thirty-nine thousand, eight hundred sixty-four".