4013215 has 4 divisors (see below), whose sum is σ = 4815864. Its totient is φ = 3210568.

The previous prime is 4013209. The next prime is 4013227. The reversal of 4013215 is 5123104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4013215 - 2⁵ = 4013183 is a prime.

It is a super-2 number, since 2×4013215² = 32211789272450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401317 + ... + 401326.

It is an arithmetic number, because the mean of its divisors is an integer number (1203966).

Almost surely, 2^4013215 is an apocalyptic number.

4013215 is a deficient number, since it is larger than the sum of its proper divisors (802649).

4013215 is an equidigital number, since it uses as much as digits as its factorization.

4013215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802648.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 4013215 is about 2003.3010258072. The cubic root of 4013215 is about 158.9147255779.

Adding to 4013215 its reverse (5123104), we get a palindrome (9136319).

The spelling of 4013215 in words is "four million, thirteen thousand, two hundred fifteen".