1440869 has 8 divisors (see below), whose sum is σ = 1539648. Its totient is φ = 1343680.

The previous prime is 1440853. The next prime is 1440877. The reversal of 1440869 is 9680441.

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

It is not a de Polignac number, because 1440869 - 2⁴ = 1440853 is a prime.

It is a super-2 number, since 2×1440869² = 4152206950322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1904 + ... + 2550.

It is an arithmetic number, because the mean of its divisors is an integer number (192456).

2^1440869 is an apocalyptic number.

It is an amenable number.

1440869 is a deficient number, since it is larger than the sum of its proper divisors (98779).

1440869 is a wasteful number, since it uses less digits than its factorization.

1440869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1440869 is about 1200.3620287230. The cubic root of 1440869 is about 112.9470344620.

The spelling of 1440869 in words is "one million, four hundred forty thousand, eight hundred sixty-nine".