1040439 has 12 divisors (see below), whose sum is σ = 1426424. Its totient is φ = 674544.

The previous prime is 1040419. The next prime is 1040447. The reversal of 1040439 is 9340401.

It is not a de Polignac number, because 1040439 - 2⁵ = 1040407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6549 + ... + 6705.

2^1040439 is an apocalyptic number.

1040439 is a deficient number, since it is larger than the sum of its proper divisors (385985).

1040439 is an equidigital number, since it uses as much as digits as its factorization.

1040439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1040439 is about 1020.0191174679. The cubic root of 1040439 is about 101.3301940490.

The spelling of 1040439 in words is "one million, forty thousand, four hundred thirty-nine".