426328549 has 2 divisors, whose sum is σ = 426328550. Its totient is φ = 426328548.

The previous prime is 426328489. The next prime is 426328559. The reversal of 426328549 is 945823624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 374229025 + 52099524 = 19345^2 + 7218^2 .

It is a cyclic number.

It is not a de Polignac number, because 426328549 - 2⁹ = 426328037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426328559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213164274 + 213164275.

It is an arithmetic number, because the mean of its divisors is an integer number (213164275).

Almost surely, 2^426328549 is an apocalyptic number.

It is an amenable number.

426328549 is a deficient number, since it is larger than the sum of its proper divisors (1).

426328549 is an equidigital number, since it uses as much as digits as its factorization.

426328549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 43.

The square root of 426328549 is about 20647.7250320707. The cubic root of 426328549 is about 752.6299074847.

The spelling of 426328549 in words is "four hundred twenty-six million, three hundred twenty-eight thousand, five hundred forty-nine".