426939788369 has 2 divisors, whose sum is σ = 426939788370. Its totient is φ = 426939788368.

The previous prime is 426939788299. The next prime is 426939788413. The reversal of 426939788369 is 963887939624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406686798400 + 20252989969 = 637720^2 + 142313^2 .

It is a cyclic number.

It is not a de Polignac number, because 426939788369 - 2²⁴ = 426923011153 is a prime.

It is a super-2 number, since 2×426939788369² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 426939788296 and 426939788305.

It is not a weakly prime, because it can be changed into another prime (426939788969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213469894184 + 213469894185.

It is an arithmetic number, because the mean of its divisors is an integer number (213469894185).

Almost surely, 2^426939788369 is an apocalyptic number.

It is an amenable number.

426939788369 is a deficient number, since it is larger than the sum of its proper divisors (1).

426939788369 is an equidigital number, since it uses as much as digits as its factorization.

426939788369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846526464, while the sum is 74.

The spelling of 426939788369 in words is "four hundred twenty-six billion, nine hundred thirty-nine million, seven hundred eighty-eight thousand, three hundred sixty-nine".