4013291 has 4 divisors (see below), whose sum is σ = 4142784. Its totient is φ = 3883800.

The previous prime is 4013287. The next prime is 4013297. The reversal of 4013291 is 1923104.

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 4013291 - 2² = 4013287 is a prime.

It is a super-2 number, since 2×4013291² = 32213009301362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4013297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64700 + ... + 64761.

It is an arithmetic number, because the mean of its divisors is an integer number (1035696).

Almost surely, 2^4013291 is an apocalyptic number.

4013291 is a deficient number, since it is larger than the sum of its proper divisors (129493).

4013291 is a wasteful number, since it uses less digits than its factorization.

4013291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129492.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 4013291 is about 2003.3199944093. The cubic root of 4013291 is about 158.9157287174.

Adding to 4013291 its reverse (1923104), we get a palindrome (5936395).

It can be divided in two parts, 40 and 13291, that added together give a palindrome (13331).

The spelling of 4013291 in words is "four million, thirteen thousand, two hundred ninety-one".