2084945 has 4 divisors (see below), whose sum is σ = 2501940. Its totient is φ = 1667952.

The previous prime is 2084921. The next prime is 2084947. The reversal of 2084945 is 5494802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5494802 = 2 ⋅2747401.

It can be written as a sum of positive squares in 2 ways, for example, as 625681 + 1459264 = 791^2 + 1208^2 .

It is a cyclic number.

It is not a de Polignac number, because 2084945 - 2⁸ = 2084689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2084947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208490 + ... + 208499.

It is an arithmetic number, because the mean of its divisors is an integer number (625485).

2^2084945 is an apocalyptic number.

It is an amenable number.

2084945 is a deficient number, since it is larger than the sum of its proper divisors (416995).

2084945 is an equidigital number, since it uses as much as digits as its factorization.

2084945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416994.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 2084945 is about 1443.9338627513. The cubic root of 2084945 is about 127.7511645197.

The spelling of 2084945 in words is "two million, eighty-four thousand, nine hundred forty-five".