426529391 has 2 divisors, whose sum is σ = 426529392. Its totient is φ = 426529390.

The previous prime is 426529387. The next prime is 426529399. The reversal of 426529391 is 193925624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 426529391 - 2² = 426529387 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 (426529399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213264695 + 213264696.

It is an arithmetic number, because the mean of its divisors is an integer number (213264696).

Almost surely, 2^426529391 is an apocalyptic number.

426529391 is a deficient number, since it is larger than the sum of its proper divisors (1).

426529391 is an equidigital number, since it uses as much as digits as its factorization.

426529391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 41.

The square root of 426529391 is about 20652.5879976336. The cubic root of 426529391 is about 752.7480761017.

The spelling of 426529391 in words is "four hundred twenty-six million, five hundred twenty-nine thousand, three hundred ninety-one".