2089851 has 4 divisors (see below), whose sum is σ = 2786472. Its totient is φ = 1393232.

The previous prime is 2089847. The next prime is 2089853. The reversal of 2089851 is 1589802.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2089851 - 2² = 2089847 is a prime.

It is a D-number.

2089851 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2089853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348306 + ... + 348311.

It is an arithmetic number, because the mean of its divisors is an integer number (696618).

2^2089851 is an apocalyptic number.

2089851 is a deficient number, since it is larger than the sum of its proper divisors (696621).

2089851 is an equidigital number, since it uses as much as digits as its factorization.

2089851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696620.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 2089851 is about 1445.6316958340. The cubic root of 2089851 is about 127.8512880663.

The spelling of 2089851 in words is "two million, eighty-nine thousand, eight hundred fifty-one".