1144845 has 48 divisors (see below), whose sum is σ = 2271360. Its totient is φ = 528768.

The previous prime is 1144837. The next prime is 1144867. The reversal of 1144845 is 5484411.

It is a happy number.

It is not a de Polignac number, because 1144845 - 2³ = 1144837 is a prime.

It is an Ulam number.

1144845 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11064 + ... + 11166.

It is an arithmetic number, because the mean of its divisors is an integer number (47320).

2^1144845 is an apocalyptic number.

1144845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1144845 is a deficient number, since it is larger than the sum of its proper divisors (1126515).

1144845 is a wasteful number, since it uses less digits than its factorization.

1144845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 143 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 1144845 is about 1069.9742987568. The cubic root of 1144845 is about 104.6121747446.

The spelling of 1144845 in words is "one million, one hundred forty-four thousand, eight hundred forty-five".