340889 has 2 divisors, whose sum is σ = 340890. Its totient is φ = 340888.

The previous prime is 340877. The next prime is 340897. The reversal of 340889 is 988043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336400 + 4489 = 580^2 + 67^2 .

It is a cyclic number.

It is not a de Polignac number, because 340889 - 2⁸ = 340633 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340819) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170444 + 170445.

It is an arithmetic number, because the mean of its divisors is an integer number (170445).

2³⁴⁰⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

340889 is a deficient number, since it is larger than the sum of its proper divisors (1).

340889 is an equidigital number, since it uses as much as digits as its factorization.

340889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 340889 is about 583.8570030410. The cubic root of 340889 is about 69.8560989389.

The spelling of 340889 in words is "three hundred forty thousand, eight hundred eighty-nine".