890000002 has 4 divisors (see below), whose sum is σ = 1335000006. Its totient is φ = 445000000.

The previous prime is 889999991. The next prime is 890000003. The reversal of 890000002 is 200000098.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200000098 = 2 ⋅100000049.

It can be written as a sum of positive squares in only one way, i.e., 807753241 + 82246761 = 28421^2 + 9069^2 .

It is not an unprimeable number, because it can be changed into a prime (890000003) 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 as a sum of consecutive naturals, namely, 222499999 + ... + 222500002.

Almost surely, 2^890000002 is an apocalyptic number.

890000002 is a deficient number, since it is larger than the sum of its proper divisors (445000004).

890000002 is a wasteful number, since it uses less digits than its factorization.

890000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445000003.

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

The square root of 890000002 is about 29832.8678138727. The cubic root of 890000002 is about 961.9001723282.

The spelling of 890000002 in words is "eight hundred ninety million, two", and thus it is an aban number.