9169890 has 16 divisors (see below), whose sum is σ = 22007808. Its totient is φ = 2445296.

The previous prime is 9169889. The next prime is 9169921. The reversal of 9169890 is 989619.

9169890 is nontrivially palindromic in base 4.

It is a super-2 number, since 2×9169890² = 168173765224200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152802 + ... + 152861.

It is an arithmetic number, because the mean of its divisors is an integer number (1375488).

Almost surely, 2^9169890 is an apocalyptic number.

9169890 is an abundant number, since it is smaller than the sum of its proper divisors (12837918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9169890 is a wasteful number, since it uses less digits than its factorization.

9169890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305673.

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 9169890 is about 3028.1826232907. The cubic root of 9169890 is about 209.3090670840.

The spelling of 9169890 in words is "nine million, one hundred sixty-nine thousand, eight hundred ninety".