1440429 has 4 divisors (see below), whose sum is σ = 1920576. Its totient is φ = 960284.

The previous prime is 1440419. The next prime is 1440437. The reversal of 1440429 is 9240441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1440429 - 2⁷ = 1440301 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1440399 and 1440408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440419) 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, 240069 + ... + 240074.

It is an arithmetic number, because the mean of its divisors is an integer number (480144).

2^1440429 is an apocalyptic number.

It is an amenable number.

1440429 is a deficient number, since it is larger than the sum of its proper divisors (480147).

1440429 is an equidigital number, since it uses as much as digits as its factorization.

1440429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480146.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1440429 is about 1200.1787366888. The cubic root of 1440429 is about 112.9355363650.

The spelling of 1440429 in words is "one million, four hundred forty thousand, four hundred twenty-nine".