406535404489 has 2 divisors, whose sum is σ = 406535404490. Its totient is φ = 406535404488.

The previous prime is 406535404477. The next prime is 406535404531. The reversal of 406535404489 is 984404535604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240303883264 + 166231521225 = 490208^2 + 407715^2 .

It is a cyclic number.

It is not a de Polignac number, because 406535404489 - 2³³ = 397945469897 is a prime.

It is a super-2 number, since 2×406535404489² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (406535404459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203267702244 + 203267702245.

It is an arithmetic number, because the mean of its divisors is an integer number (203267702245).

Almost surely, 2^406535404489 is an apocalyptic number.

It is an amenable number.

406535404489 is a deficient number, since it is larger than the sum of its proper divisors (1).

406535404489 is an equidigital number, since it uses as much as digits as its factorization.

406535404489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8294400, while the sum is 52.

The spelling of 406535404489 in words is "four hundred six billion, five hundred thirty-five million, four hundred four thousand, four hundred eighty-nine".