4002087 has 16 divisors (see below), whose sum is σ = 5574240. Its totient is φ = 2550912.

The previous prime is 4002077. The next prime is 4002101. The reversal of 4002087 is 7802004.

It is a happy number.

4002087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4002087 - 2⁸ = 4001831 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002017) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13513 + ... + 13805.

It is an arithmetic number, because the mean of its divisors is an integer number (348390).

Almost surely, 2^4002087 is an apocalyptic number.

4002087 is a deficient number, since it is larger than the sum of its proper divisors (1572153).

4002087 is a wasteful number, since it uses less digits than its factorization.

4002087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 4002087 is about 2000.5216819620. The cubic root of 4002087 is about 158.7677079468.

The spelling of 4002087 in words is "four million, two thousand, eighty-seven".