1002889 has 8 divisors (see below), whose sum is σ = 1042272. Its totient is φ = 964320.

The previous prime is 1002887. The next prime is 1002893. The reversal of 1002889 is 9882001.

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 1002889 - 2¹ = 1002887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3429 + ... + 3709.

It is an arithmetic number, because the mean of its divisors is an integer number (130284).

2^1002889 is an apocalyptic number.

It is an amenable number.

1002889 is a deficient number, since it is larger than the sum of its proper divisors (39383).

1002889 is an equidigital number, since it uses as much as digits as its factorization.

1002889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 1002889 is about 1001.4434582142. The cubic root of 1002889 is about 100.0962074117.

It can be divided in two parts, 1002 and 889, that added together give a triangular number (1891 = T₆₁).

The spelling of 1002889 in words is "one million, two thousand, eight hundred eighty-nine".