9890002 has 4 divisors (see below), whose sum is σ = 14835006. Its totient is φ = 4945000.

The previous prime is 9889987. The next prime is 9890009. The reversal of 9890002 is 2000989.

It is a happy number.

9890002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9235521 + 654481 = 3039^2 + 809^2 .

It is not an unprimeable number, because it can be changed into a prime (9890009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2472499 + ... + 2472502.

Almost surely, 2^9890002 is an apocalyptic number.

9890002 is a deficient number, since it is larger than the sum of its proper divisors (4945004).

9890002 is a wasteful number, since it uses less digits than its factorization.

9890002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4945003.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 9890002 is about 3144.8373566848. The cubic root of 9890002 is about 214.6506097365.

It can be divided in two parts, 98 and 90002, that added together give a triangular number (90100 = T₄₂₄).

The spelling of 9890002 in words is "nine million, eight hundred ninety thousand, two".