4015940 has 12 divisors (see below), whose sum is σ = 8433516. Its totient is φ = 1606368.

The previous prime is 4015939. The next prime is 4015981. The reversal of 4015940 is 495104.

It is a happy number.

4015940 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 2 ways, for example, as 2033476 + 1982464 = 1426^2 + 1408^2 .

It is a super-2 number, since 2×4015940² = 32255548167200, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 100379 + ... + 100418.

It is an arithmetic number, because the mean of its divisors is an integer number (702793).

Almost surely, 2^4015940 is an apocalyptic number.

It is an amenable number.

4015940 is an abundant number, since it is smaller than the sum of its proper divisors (4417576).

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

4015940 is a wasteful number, since it uses less digits than its factorization.

4015940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200806 (or 200804 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 4015940 is about 2003.9810378344. The cubic root of 4015940 is about 158.9506854963.

The spelling of 4015940 in words is "four million, fifteen thousand, nine hundred forty".