1440999 has 24 divisors (see below), whose sum is σ = 2414880. Its totient is φ = 811008.

The previous prime is 1440983. The next prime is 1441001. The reversal of 1440999 is 9990441.

It is not a de Polignac number, because 1440999 - 2⁴ = 1440983 is a prime.

1440999 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5479 + ... + 5735.

It is an arithmetic number, because the mean of its divisors is an integer number (100620).

2^1440999 is an apocalyptic number.

1440999 is a deficient number, since it is larger than the sum of its proper divisors (973881).

1440999 is a wasteful number, since it uses less digits than its factorization.

1440999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1440999 is about 1200.4161778317. The cubic root of 1440999 is about 112.9504311790.

The spelling of 1440999 in words is "one million, four hundred forty thousand, nine hundred ninety-nine".