426804426889 has 2 divisors, whose sum is σ = 426804426890. Its totient is φ = 426804426888.

The previous prime is 426804426857. The next prime is 426804426943. The reversal of 426804426889 is 988624408624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271811036025 + 154993390864 = 521355^2 + 393692^2 .

It is a cyclic number.

It is not a de Polignac number, because 426804426889 - 2⁵ = 426804426857 is a prime.

It is not a weakly prime, because it can be changed into another prime (426804426589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213402213444 + 213402213445.

It is an arithmetic number, because the mean of its divisors is an integer number (213402213445).

Almost surely, 2^426804426889 is an apocalyptic number.

It is an amenable number.

426804426889 is a deficient number, since it is larger than the sum of its proper divisors (1).

426804426889 is an equidigital number, since it uses as much as digits as its factorization.

426804426889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42467328, while the sum is 61.

The spelling of 426804426889 in words is "four hundred twenty-six billion, eight hundred four million, four hundred twenty-six thousand, eight hundred eighty-nine".