406260493 has 2 divisors, whose sum is σ = 406260494. Its totient is φ = 406260492.

The previous prime is 406260419. The next prime is 406260521. The reversal of 406260493 is 394062604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400120009 + 6140484 = 20003^2 + 2478^2 .

It is a cyclic number.

It is not a de Polignac number, because 406260493 - 2⁹ = 406259981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406260193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203130246 + 203130247.

It is an arithmetic number, because the mean of its divisors is an integer number (203130247).

Almost surely, 2^406260493 is an apocalyptic number.

It is an amenable number.

406260493 is a deficient number, since it is larger than the sum of its proper divisors (1).

406260493 is an equidigital number, since it uses as much as digits as its factorization.

406260493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 406260493 is about 20155.9046683596. The cubic root of 406260493 is about 740.6303935539.

The spelling of 406260493 in words is "four hundred six million, two hundred sixty thousand, four hundred ninety-three".