11872891 has 8 divisors (see below), whose sum is σ = 12571200. Its totient is φ = 11181960.

The previous prime is 11872879. The next prime is 11872951. The reversal of 11872891 is 19827811.

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 11872891 - 2⁹ = 11872379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11872891.

It is not an unprimeable number, because it can be changed into a prime (11872801) 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, 1656 + ... + 5146.

It is an arithmetic number, because the mean of its divisors is an integer number (1571400).

Almost surely, 2^11872891 is an apocalyptic number.

11872891 is a deficient number, since it is larger than the sum of its proper divisors (698309).

11872891 is a wasteful number, since it uses less digits than its factorization.

11872891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3689.

The product of its digits is 8064, while the sum is 37.

The square root of 11872891 is about 3445.7061685524. The cubic root of 11872891 is about 228.1316247779.

The spelling of 11872891 in words is "eleven million, eight hundred seventy-two thousand, eight hundred ninety-one".