9890870 has 16 divisors (see below), whose sum is σ = 19422288. Its totient is φ = 3596640.

The previous prime is 9890869. The next prime is 9890873. The reversal of 9890870 is 780989.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9890873) 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, 44849 + ... + 45068.

It is an arithmetic number, because the mean of its divisors is an integer number (1213893).

Almost surely, 2^9890870 is an apocalyptic number.

9890870 is a deficient number, since it is larger than the sum of its proper divisors (9531418).

9890870 is a wasteful number, since it uses less digits than its factorization.

9890870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89935.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 9890870 is about 3144.9753576141. The cubic root of 9890870 is about 214.6568891851.

The spelling of 9890870 in words is "nine million, eight hundred ninety thousand, eight hundred seventy".