2085739 has 2 divisors, whose sum is σ = 2085740. Its totient is φ = 2085738.

The previous prime is 2085737. The next prime is 2085757. The reversal of 2085739 is 9375802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2085739 - 2¹ = 2085737 is a prime.

It is a super-2 number, since 2×2085739² = 8700614352242, which contains 22 as substring.

Together with 2085737, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2085731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1042869 + 1042870.

It is an arithmetic number, because the mean of its divisors is an integer number (1042870).

2^2085739 is an apocalyptic number.

2085739 is a deficient number, since it is larger than the sum of its proper divisors (1).

2085739 is an equidigital number, since it uses as much as digits as its factorization.

2085739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2085739 is about 1444.2087799207. The cubic root of 2085739 is about 127.7673794241.

The spelling of 2085739 in words is "two million, eighty-five thousand, seven hundred thirty-nine".