90843900 has 144 divisors (see below), whose sum is σ = 303313920. Its totient is φ = 20563200.

The previous prime is 90843889. The next prime is 90843911. The reversal of 90843900 is 934809.

It is an interprime number because it is at equal distance from previous prime (90843889) and next prime (90843911).

It is a super-2 number, since 2×90843900² = 16505228334420000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 379981 + ... + 380219.

Almost surely, 2^90843900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90843900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151656960).

90843900 is an abundant number, since it is smaller than the sum of its proper divisors (212470020).

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

90843900 is a wasteful number, since it uses less digits than its factorization.

90843900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 90843900 is about 9531.2066392456. The cubic root of 90843900 is about 449.5368073421.

The spelling of 90843900 in words is "ninety million, eight hundred forty-three thousand, nine hundred".