1144855 has 8 divisors (see below), whose sum is σ = 1379664. Its totient is φ = 912000.

The previous prime is 1144837. The next prime is 1144867. The reversal of 1144855 is 5584411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1144855 - 2⁵ = 1144823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1720 + ... + 2290.

It is an arithmetic number, because the mean of its divisors is an integer number (172458).

2^1144855 is an apocalyptic number.

1144855 is a deficient number, since it is larger than the sum of its proper divisors (234809).

1144855 is an equidigital number, since it uses as much as digits as its factorization.

1144855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977.

The product of its digits is 3200, while the sum is 28.

The square root of 1144855 is about 1069.9789717560. The cubic root of 1144855 is about 104.6124793327.

The spelling of 1144855 in words is "one million, one hundred forty-four thousand, eight hundred fifty-five".