4008891 has 8 divisors (see below), whose sum is σ = 5361984. Its totient is φ = 2664200.

The previous prime is 4008887. The next prime is 4008919. The reversal of 4008891 is 1988004.

It is a happy number.

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 4008891 - 2² = 4008887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4008841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885 + ... + 2966.

It is an arithmetic number, because the mean of its divisors is an integer number (670248).

Almost surely, 2^4008891 is an apocalyptic number.

4008891 is a deficient number, since it is larger than the sum of its proper divisors (1353093).

4008891 is a wasteful number, since it uses less digits than its factorization.

4008891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4201.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 4008891 is about 2002.2215162164. The cubic root of 4008891 is about 158.8576313523.

It can be divided in two parts, 4008 and 891, that multiplied together give a triangular number (3571128 = T₂₆₇₂).

The spelling of 4008891 in words is "four million, eight thousand, eight hundred ninety-one".