1002839 has 8 divisors (see below), whose sum is σ = 1079040. Its totient is φ = 929016.

The previous prime is 1002821. The next prime is 1002851. The reversal of 1002839 is 9382001.

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

It is a cyclic number.

It is not a de Polignac number, because 1002839 - 2⁸ = 1002583 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 (1002809) 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, 332 + ... + 1454.

It is an arithmetic number, because the mean of its divisors is an integer number (134880).

2^1002839 is an apocalyptic number.

1002839 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1002839 is a deficient number, since it is larger than the sum of its proper divisors (76201).

1002839 is a wasteful number, since it uses less digits than its factorization.

1002839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1002839 is about 1001.4184939375. The cubic root of 1002839 is about 100.0945439196.

The spelling of 1002839 in words is "one million, two thousand, eight hundred thirty-nine".