9039890 has 16 divisors (see below), whose sum is σ = 16651008. Its totient is φ = 3531696.

The previous prime is 9039857. The next prime is 9039893. The reversal of 9039890 is 989309.

It is a super-2 number, since 2×9039890² = 163439222424200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9039893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10082 + ... + 10941.

It is an arithmetic number, because the mean of its divisors is an integer number (1040688).

Almost surely, 2^9039890 is an apocalyptic number.

9039890 is a deficient number, since it is larger than the sum of its proper divisors (7611118).

9039890 is a wasteful number, since it uses less digits than its factorization.

9039890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21073.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 9039890 is about 3006.6409828910. The cubic root of 9039890 is about 208.3152425180.

The spelling of 9039890 in words is "nine million, thirty-nine thousand, eight hundred ninety".