426821727 has 12 divisors (see below), whose sum is σ = 573677016. Its totient is φ = 282275280.

The previous prime is 426821693. The next prime is 426821743. The reversal of 426821727 is 727128624.

It is not a de Polignac number, because 426821727 - 2⁶ = 426821663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426821627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43977 + ... + 52797.

It is an arithmetic number, because the mean of its divisors is an integer number (47806418).

Almost surely, 2^426821727 is an apocalyptic number.

426821727 is a deficient number, since it is larger than the sum of its proper divisors (146855289).

426821727 is an equidigital number, since it uses as much as digits as its factorization.

426821727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9078 (or 8951 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 426821727 is about 20659.6642518701. The cubic root of 426821727 is about 752.9200104094.

The spelling of 426821727 in words is "four hundred twenty-six million, eight hundred twenty-one thousand, seven hundred twenty-seven".