4002115 has 16 divisors (see below), whose sum is σ = 5398848. Its totient is φ = 2825856.

The previous prime is 4002113. The next prime is 4002127. The reversal of 4002115 is 5112004.

It is a cyclic number.

It is not a de Polignac number, because 4002115 - 2¹ = 4002113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 4002095 and 4002104.

It is not an unprimeable number, because it can be changed into a prime (4002113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157 + ... + 2833.

It is an arithmetic number, because the mean of its divisors is an integer number (337428).

Almost surely, 2^4002115 is an apocalyptic number.

4002115 is a deficient number, since it is larger than the sum of its proper divisors (1396733).

4002115 is a wasteful number, since it uses less digits than its factorization.

4002115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 4002115 is about 2000.5286801243. The cubic root of 4002115 is about 158.7680782107.

Adding to 4002115 its reverse (5112004), we get a palindrome (9114119).

The spelling of 4002115 in words is "four million, two thousand, one hundred fifteen".