1440109 has 8 divisors (see below), whose sum is σ = 1589760. Its totient is φ = 1293600.

The previous prime is 1440107. The next prime is 1440119. The reversal of 1440109 is 9010441.

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

It is not a de Polignac number, because 1440109 - 2¹ = 1440107 is a prime.

It is a Duffinian number.

1440109 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244 + ... + 1714.

It is an arithmetic number, because the mean of its divisors is an integer number (198720).

2^1440109 is an apocalyptic number.

It is an amenable number.

1440109 is a deficient number, since it is larger than the sum of its proper divisors (149651).

1440109 is a wasteful number, since it uses less digits than its factorization.

1440109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1440109 is about 1200.0454158073. The cubic root of 1440109 is about 112.9271726418.

The spelling of 1440109 in words is "one million, four hundred forty thousand, one hundred nine".