426630109 has 2 divisors, whose sum is σ = 426630110. Its totient is φ = 426630108.

The previous prime is 426630101. The next prime is 426630119. The reversal of 426630109 is 901036624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280462009 + 146168100 = 16747^2 + 12090^2 .

It is a cyclic number.

It is not a de Polignac number, because 426630109 - 2³ = 426630101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426630101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213315054 + 213315055.

It is an arithmetic number, because the mean of its divisors is an integer number (213315055).

Almost surely, 2^426630109 is an apocalyptic number.

It is an amenable number.

426630109 is a deficient number, since it is larger than the sum of its proper divisors (1).

426630109 is an equidigital number, since it uses as much as digits as its factorization.

426630109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 426630109 is about 20655.0262406030. The cubic root of 426630109 is about 752.8073211898.

The spelling of 426630109 in words is "four hundred twenty-six million, six hundred thirty thousand, one hundred nine".