8361990 has 96 divisors (see below), whose sum is σ = 26784576. Its totient is φ = 1762560.

The previous prime is 8361979. The next prime is 8362021. The reversal of 8361990 is 991638.

8361990 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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, 7680 + ... + 8700.

It is an arithmetic number, because the mean of its divisors is an integer number (279006).

Almost surely, 2^8361990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8361990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13392288).

8361990 is an abundant number, since it is smaller than the sum of its proper divisors (18422586).

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

8361990 is a wasteful number, since it uses less digits than its factorization.

8361990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 8361990 is about 2891.7105664295. The cubic root of 8361990 is about 202.9721948214.

The spelling of 8361990 in words is "eight million, three hundred sixty-one thousand, nine hundred ninety".