406870589 has 2 divisors, whose sum is σ = 406870590. Its totient is φ = 406870588.

The previous prime is 406870573. The next prime is 406870591. The reversal of 406870589 is 985078604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406344964 + 525625 = 20158^2 + 725^2 .

It is a cyclic number.

It is not a de Polignac number, because 406870589 - 2⁴ = 406870573 is a prime.

Together with 406870591, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406872589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203435294 + 203435295.

It is an arithmetic number, because the mean of its divisors is an integer number (203435295).

Almost surely, 2^406870589 is an apocalyptic number.

It is an amenable number.

406870589 is a deficient number, since it is larger than the sum of its proper divisors (1).

406870589 is an equidigital number, since it uses as much as digits as its factorization.

406870589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 406870589 is about 20171.0334142800. The cubic root of 406870589 is about 741.0009518923. Note that the first 3 decimals are identical.

The spelling of 406870589 in words is "four hundred six million, eight hundred seventy thousand, five hundred eighty-nine".