2281739 has 2 divisors, whose sum is σ = 2281740. Its totient is φ = 2281738.

The previous prime is 2281717. The next prime is 2281751. The reversal of 2281739 is 9371822.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2281739 is a prime.

It is not a weakly prime, because it can be changed into another prime (2281789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1140869 + 1140870.

It is an arithmetic number, because the mean of its divisors is an integer number (1140870).

2^2281739 is an apocalyptic number.

2281739 is a deficient number, since it is larger than the sum of its proper divisors (1).

2281739 is an equidigital number, since it uses as much as digits as its factorization.

2281739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 2281739 is about 1510.5426177371. The cubic root of 2281739 is about 131.6503410476.

The spelling of 2281739 in words is "two million, two hundred eighty-one thousand, seven hundred thirty-nine".