1002439 has 4 divisors (see below), whose sum is σ = 1061424. Its totient is φ = 943456.

The previous prime is 1002433. The next prime is 1002451. The reversal of 1002439 is 9342001.

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 1002439 - 2¹³ = 994247 is a prime.

It is a Duffinian number.

1002439 is a modest number, since divided by 2439 gives 10 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002433) 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 3 ways as a sum of consecutive naturals, for example, 29467 + ... + 29500.

It is an arithmetic number, because the mean of its divisors is an integer number (265356).

2^1002439 is an apocalyptic number.

1002439 is a deficient number, since it is larger than the sum of its proper divisors (58985).

1002439 is an equidigital number, since it uses as much as digits as its factorization.

1002439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58984.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1002439 is about 1001.2187573153. The cubic root of 1002439 is about 100.0812339925.

It can be divided in two parts, 1002 and 439, that added together give a palindrome (1441).

The spelling of 1002439 in words is "one million, two thousand, four hundred thirty-nine".