4039920 has 120 divisors (see below), whose sum is σ = 14082432. Its totient is φ = 1036800.

The previous prime is 4039901. The next prime is 4039949. The reversal of 4039920 is 299304.

4039920 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22230 + ... + 22410.

Almost surely, 2^4039920 is an apocalyptic number.

4039920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4039920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7041216).

4039920 is an abundant number, since it is smaller than the sum of its proper divisors (10042512).

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

4039920 is a wasteful number, since it uses less digits than its factorization.

4039920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 4039920 is about 2009.9552233819. The cubic root of 4039920 is about 159.2664335583.

The spelling of 4039920 in words is "four million, thirty-nine thousand, nine hundred twenty".