426163709 has 2 divisors, whose sum is σ = 426163710. Its totient is φ = 426163708.

The previous prime is 426163693. The next prime is 426163723. The reversal of 426163709 is 907361624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355435609 + 70728100 = 18853^2 + 8410^2 .

It is a cyclic number.

It is not a de Polignac number, because 426163709 - 2⁴ = 426163693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426163739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213081854 + 213081855.

It is an arithmetic number, because the mean of its divisors is an integer number (213081855).

Almost surely, 2^426163709 is an apocalyptic number.

It is an amenable number.

426163709 is a deficient number, since it is larger than the sum of its proper divisors (1).

426163709 is an equidigital number, since it uses as much as digits as its factorization.

426163709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 426163709 is about 20643.7329230931. The cubic root of 426163709 is about 752.5328934897.

The spelling of 426163709 in words is "four hundred twenty-six million, one hundred sixty-three thousand, seven hundred nine".