3256789 has 2 divisors, whose sum is σ = 3256790. Its totient is φ = 3256788.

The previous prime is 3256739. The next prime is 3256793. The reversal of 3256789 is 9876523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2856100 + 400689 = 1690^2 + 633^2 .

It is a cyclic number.

It is not a de Polignac number, because 3256789 - 2¹⁹ = 2732501 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3256739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1628394 + 1628395.

It is an arithmetic number, because the mean of its divisors is an integer number (1628395).

Almost surely, 2^3256789 is an apocalyptic number.

It is an amenable number.

3256789 is a deficient number, since it is larger than the sum of its proper divisors (1).

3256789 is an equidigital number, since it uses as much as digits as its factorization.

3256789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 3256789 is about 1804.6575852499. The cubic root of 3256789 is about 148.2278721262.

The spelling of 3256789 in words is "three million, two hundred fifty-six thousand, seven hundred eighty-nine".