11450891 has 4 divisors (see below), whose sum is σ = 11457672. Its totient is φ = 11444112.

The previous prime is 11450869. The next prime is 11450893. The reversal of 11450891 is 19805411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11450891 is a prime.

It is a super-2 number, since 2×11450891² = 262245809387762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11450893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391 + ... + 4983.

It is an arithmetic number, because the mean of its divisors is an integer number (2864418).

Almost surely, 2^11450891 is an apocalyptic number.

11450891 is a deficient number, since it is larger than the sum of its proper divisors (6781).

11450891 is an equidigital number, since it uses as much as digits as its factorization.

11450891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6780.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 11450891 is about 3383.9165178828. The cubic root of 11450891 is about 225.3961153932.

The spelling of 11450891 in words is "eleven million, four hundred fifty thousand, eight hundred ninety-one".