2086398 has 40 divisors (see below), whose sum is σ = 4782888. Its totient is φ = 682344.

The previous prime is 2086397. The next prime is 2086421. The reversal of 2086398 is 8936802.

It is a super-2 number, since 2×2086398² = 8706113228808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2086397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 39340 + ... + 39392.

2^2086398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2086398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2391444).

2086398 is an abundant number, since it is smaller than the sum of its proper divisors (2696490).

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

2086398 is an frugal number, since it uses more digits than its factorization.

2086398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 2086398 is about 1444.4369145103. The cubic root of 2086398 is about 127.7808342614.

The spelling of 2086398 in words is "two million, eighty-six thousand, three hundred ninety-eight".