9870890 has 8 divisors (see below), whose sum is σ = 17767620. Its totient is φ = 3948352.

The previous prime is 9870871. The next prime is 9870907. The reversal of 9870890 is 980789.

9870890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9186961 + 683929 = 3031^2 + 827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×9870890³ (a number of 22 digits) contains 333 as substring.

It is an Ulam number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493535 + ... + 493554.

Almost surely, 2^9870890 is an apocalyptic number.

9870890 is a deficient number, since it is larger than the sum of its proper divisors (7896730).

9870890 is a wasteful number, since it uses less digits than its factorization.

9870890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987096.

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

The square root of 9870890 is about 3141.7972563487. The cubic root of 9870890 is about 214.5122529102.

The spelling of 9870890 in words is "nine million, eight hundred seventy thousand, eight hundred ninety".