406859423 has 2 divisors, whose sum is σ = 406859424. Its totient is φ = 406859422.

The previous prime is 406859417. The next prime is 406859459. The reversal of 406859423 is 324958604.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406859423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406859923) 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, 203429711 + 203429712.

It is an arithmetic number, because the mean of its divisors is an integer number (203429712).

Almost surely, 2^406859423 is an apocalyptic number.

406859423 is a deficient number, since it is larger than the sum of its proper divisors (1).

406859423 is an equidigital number, since it uses as much as digits as its factorization.

406859423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 406859423 is about 20170.7566293384. The cubic root of 406859423 is about 740.9941732486.

The spelling of 406859423 in words is "four hundred six million, eight hundred fifty-nine thousand, four hundred twenty-three".