4040215 has 8 divisors (see below), whose sum is σ = 4979520. Its totient is φ = 3144672.

The previous prime is 4040207. The next prime is 4040219. The reversal of 4040215 is 5120404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4040215 - 2³ = 4040207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10735 + ... + 11104.

It is an arithmetic number, because the mean of its divisors is an integer number (622440).

Almost surely, 2^4040215 is an apocalyptic number.

4040215 is a deficient number, since it is larger than the sum of its proper divisors (939305).

4040215 is a wasteful number, since it uses less digits than its factorization.

4040215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21881.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 4040215 is about 2010.0286067616. The cubic root of 4040215 is about 159.2703100752.

Adding to 4040215 its reverse (5120404), we get a palindrome (9160619).

The spelling of 4040215 in words is "four million, forty thousand, two hundred fifteen".