11149855 has 4 divisors (see below), whose sum is σ = 13379832. Its totient is φ = 8919880.

The previous prime is 11149849. The next prime is 11149861. The reversal of 11149855 is 55894111.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11149849) and next prime (11149861).

It is not a de Polignac number, because 11149855 - 2³ = 11149847 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 11149855.

It is a congruent number.

It is an unprimeable number.

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, 1114981 + ... + 1114990.

It is an arithmetic number, because the mean of its divisors is an integer number (3344958).

Almost surely, 2^11149855 is an apocalyptic number.

11149855 is a deficient number, since it is larger than the sum of its proper divisors (2229977).

11149855 is an equidigital number, since it uses as much as digits as its factorization.

11149855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229976.

The product of its digits is 7200, while the sum is 34.

The square root of 11149855 is about 3339.1398593051. The cubic root of 11149855 is about 223.4033801715.

The spelling of 11149855 in words is "eleven million, one hundred forty-nine thousand, eight hundred fifty-five".