4015944 has 72 divisors (see below), whose sum is σ = 11613810. Its totient is φ = 1253376.

The previous prime is 4015939. The next prime is 4015981. The reversal of 4015944 is 4495104.

4015944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3802500 + 213444 = 1950^2 + 462^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×4015944² = 32255612422272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 20712 + ... + 20904.

Almost surely, 2^4015944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4015944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5806905).

4015944 is an abundant number, since it is smaller than the sum of its proper divisors (7597866).

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

4015944 is a wasteful number, since it uses less digits than its factorization.

4015944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 4015944 is about 2003.9820358476. The cubic root of 4015944 is about 158.9507382695.

The spelling of 4015944 in words is "four million, fifteen thousand, nine hundred forty-four".