4006291 has 4 divisors (see below), whose sum is σ = 4035672. Its totient is φ = 3976912.

The previous prime is 4006273. The next prime is 4006307. The reversal of 4006291 is 1926004.

4006291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4006291 - 2⁵ = 4006259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4006201) 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 3 ways as a sum of consecutive naturals, for example, 14485 + ... + 14758.

It is an arithmetic number, because the mean of its divisors is an integer number (1008918).

Almost surely, 2^4006291 is an apocalyptic number.

4006291 is a deficient number, since it is larger than the sum of its proper divisors (29381).

4006291 is a wasteful number, since it uses less digits than its factorization.

4006291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29380.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 4006291 is about 2001.5721321002. The cubic root of 4006291 is about 158.8232811072.

The spelling of 4006291 in words is "four million, six thousand, two hundred ninety-one".