426746069 has 2 divisors, whose sum is σ = 426746070. Its totient is φ = 426746068.

The previous prime is 426745937. The next prime is 426746113. The reversal of 426746069 is 960647624.

It is an a-pointer prime, because the next prime (426746113) can be obtained adding 426746069 to its sum of digits (44).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425927044 + 819025 = 20638^2 + 905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426746069 is a prime.

It is a super-2 number, since 2×426746069² = 364224414813905522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426746569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213373034 + 213373035.

It is an arithmetic number, because the mean of its divisors is an integer number (213373035).

Almost surely, 2^426746069 is an apocalyptic number.

It is an amenable number.

426746069 is a deficient number, since it is larger than the sum of its proper divisors (1).

426746069 is an equidigital number, since it uses as much as digits as its factorization.

426746069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 426746069 is about 20657.8331148260. The cubic root of 426746069 is about 752.8755204934.

The spelling of 426746069 in words is "four hundred twenty-six million, seven hundred forty-six thousand, sixty-nine".