426444377 has 2 divisors, whose sum is σ = 426444378. Its totient is φ = 426444376.

The previous prime is 426444329. The next prime is 426444383. The reversal of 426444377 is 773444624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 276357376 + 150087001 = 16624^2 + 12251^2 .

It is a cyclic number.

It is not a de Polignac number, because 426444377 - 2¹⁸ = 426182233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (426444397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213222188 + 213222189.

It is an arithmetic number, because the mean of its divisors is an integer number (213222189).

Almost surely, 2^426444377 is an apocalyptic number.

It is an amenable number.

426444377 is a deficient number, since it is larger than the sum of its proper divisors (1).

426444377 is an equidigital number, since it uses as much as digits as its factorization.

426444377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 41.

The square root of 426444377 is about 20650.5297026493. The cubic root of 426444377 is about 752.6980612779.

The spelling of 426444377 in words is "four hundred twenty-six million, four hundred forty-four thousand, three hundred seventy-seven".