406425589 has 2 divisors, whose sum is σ = 406425590. Its totient is φ = 406425588.

The previous prime is 406425583. The next prime is 406425601. The reversal of 406425589 is 985524604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395811025 + 10614564 = 19895^2 + 3258^2 .

It is a cyclic number.

It is not a de Polignac number, because 406425589 - 2⁵ = 406425557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406425583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203212794 + 203212795.

It is an arithmetic number, because the mean of its divisors is an integer number (203212795).

Almost surely, 2^406425589 is an apocalyptic number.

It is an amenable number.

406425589 is a deficient number, since it is larger than the sum of its proper divisors (1).

406425589 is an equidigital number, since it uses as much as digits as its factorization.

406425589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 43.

The square root of 406425589 is about 20159.9997271825. Note that the first 3 decimals coincide. The cubic root of 406425589 is about 740.7307056754.

The spelling of 406425589 in words is "four hundred six million, four hundred twenty-five thousand, five hundred eighty-nine".