890002 has 4 divisors (see below), whose sum is σ = 1335006. Its totient is φ = 445000.

The previous prime is 889997. The next prime is 890003. The reversal of 890002 is 200098.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200098 = 2 ⋅100049.

It can be written as a sum of positive squares in only one way, i.e., 881721 + 8281 = 939^2 + 91^2 .

It is not an unprimeable number, because it can be changed into a prime (890003) by changing a digit.

890002 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222499 + ... + 222502.

2⁸⁹⁰⁰⁰² is an apocalyptic number.

890002 is a deficient number, since it is larger than the sum of its proper divisors (445004).

890002 is a wasteful number, since it uses less digits than its factorization.

890002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445003.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 890002 is about 943.3991732029. The cubic root of 890002 is about 96.1900892132.

The spelling of 890002 in words is "eight hundred ninety thousand, two".