1440871 has 4 divisors (see below), whose sum is σ = 1454200. Its totient is φ = 1427544.

The previous prime is 1440853. The next prime is 1440877. The reversal of 1440871 is 1780441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1440871 - 2¹³ = 1432679 is a prime.

It is a super-2 number, since 2×1440871² = 4152218477282, 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 (1440877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6501 + ... + 6718.

It is an arithmetic number, because the mean of its divisors is an integer number (363550).

2^1440871 is an apocalyptic number.

1440871 is a deficient number, since it is larger than the sum of its proper divisors (13329).

1440871 is a wasteful number, since it uses less digits than its factorization.

1440871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13328.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 1440871 is about 1200.3628618047. The cubic root of 1440871 is about 112.9470867207.

The spelling of 1440871 in words is "one million, four hundred forty thousand, eight hundred seventy-one".