2040385 has 4 divisors (see below), whose sum is σ = 2448468. Its totient is φ = 1632304.

The previous prime is 2040377. The next prime is 2040403. The reversal of 2040385 is 5830402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5830402 = 2 ⋅2915201.

It can be written as a sum of positive squares in 2 ways, for example, as 399424 + 1640961 = 632^2 + 1281^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040385 - 2³ = 2040377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204034 + ... + 204043.

It is an arithmetic number, because the mean of its divisors is an integer number (612117).

2^2040385 is an apocalyptic number.

It is an amenable number.

2040385 is a deficient number, since it is larger than the sum of its proper divisors (408083).

2040385 is an equidigital number, since it uses as much as digits as its factorization.

2040385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408082.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2040385 is about 1428.4204563083. The cubic root of 2040385 is about 126.8344920712.

Adding to 2040385 its reverse (5830402), we get a palindrome (7870787).

The spelling of 2040385 in words is "two million, forty thousand, three hundred eighty-five".