2089981 has 8 divisors (see below), whose sum is σ = 2213280. Its totient is φ = 1968048.

The previous prime is 2089979. The next prime is 2090003. The reversal of 2089981 is 1899802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2089981 - 2¹ = 2089979 is a prime.

It is a super-2 number, since 2×2089981² = 8736041160722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2089981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2089951) 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 7 ways as a sum of consecutive naturals, for example, 5850 + ... + 6196.

It is an arithmetic number, because the mean of its divisors is an integer number (276660).

2^2089981 is an apocalyptic number.

It is an amenable number.

2089981 is a deficient number, since it is larger than the sum of its proper divisors (123299).

2089981 is a wasteful number, since it uses less digits than its factorization.

2089981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 2089981 is about 1445.6766581778. The cubic root of 2089981 is about 127.8539390245.

The spelling of 2089981 in words is "two million, eighty-nine thousand, nine hundred eighty-one".