11405867 has 8 divisors (see below), whose sum is σ = 12467952. Its totient is φ = 10348000.

The previous prime is 11405857. The next prime is 11405873. The reversal of 11405867 is 76850411.

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 11405867 - 2¹⁸ = 11143723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11405837) 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 7 ways as a sum of consecutive naturals, for example, 8117 + ... + 9417.

It is an arithmetic number, because the mean of its divisors is an integer number (1558494).

Almost surely, 2^11405867 is an apocalyptic number.

11405867 is a deficient number, since it is larger than the sum of its proper divisors (1062085).

11405867 is a wasteful number, since it uses less digits than its factorization.

11405867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 11405867 is about 3377.2573191867. The cubic root of 11405867 is about 225.1003141170.

It can be divided in two parts, 1140 and 5867, that added together give a palindrome (7007).

The spelling of 11405867 in words is "eleven million, four hundred five thousand, eight hundred sixty-seven".