426689723 has 2 divisors, whose sum is σ = 426689724. Its totient is φ = 426689722.

The previous prime is 426689719. The next prime is 426689729. The reversal of 426689723 is 327986624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 426689723 - 2² = 426689719 is a prime.

It is not a weakly prime, because it can be changed into another prime (426689729) 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, 213344861 + 213344862.

It is an arithmetic number, because the mean of its divisors is an integer number (213344862).

Almost surely, 2^426689723 is an apocalyptic number.

426689723 is a deficient number, since it is larger than the sum of its proper divisors (1).

426689723 is an equidigital number, since it uses as much as digits as its factorization.

426689723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 47.

The square root of 426689723 is about 20656.4692772022. The cubic root of 426689723 is about 752.8423833858.

The spelling of 426689723 in words is "four hundred twenty-six million, six hundred eighty-nine thousand, seven hundred twenty-three".