426323549 has 2 divisors, whose sum is σ = 426323550. Its totient is φ = 426323548.

The previous prime is 426323537. The next prime is 426323627. The reversal of 426323549 is 945323624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 414122500 + 12201049 = 20350^2 + 3493^2 .

It is a cyclic number.

It is not a de Polignac number, because 426323549 - 2¹⁶ = 426258013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426328549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213161774 + 213161775.

It is an arithmetic number, because the mean of its divisors is an integer number (213161775).

Almost surely, 2^426323549 is an apocalyptic number.

It is an amenable number.

426323549 is a deficient number, since it is larger than the sum of its proper divisors (1).

426323549 is an equidigital number, since it uses as much as digits as its factorization.

426323549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 38.

The square root of 426323549 is about 20647.6039530014. The cubic root of 426323549 is about 752.6269651809.

The spelling of 426323549 in words is "four hundred twenty-six million, three hundred twenty-three thousand, five hundred forty-nine".