426789287 has 2 divisors, whose sum is σ = 426789288. Its totient is φ = 426789286.

The previous prime is 426789239. The next prime is 426789289. The reversal of 426789287 is 782987624.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 426789287 - 2⁸ = 426789031 is a prime.

Together with 426789289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426789289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213394643 + 213394644.

It is an arithmetic number, because the mean of its divisors is an integer number (213394644).

Almost surely, 2^426789287 is an apocalyptic number.

426789287 is a deficient number, since it is larger than the sum of its proper divisors (1).

426789287 is an equidigital number, since it uses as much as digits as its factorization.

426789287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 53.

The square root of 426789287 is about 20658.8791322279. The cubic root of 426789287 is about 752.9009350419.

The spelling of 426789287 in words is "four hundred twenty-six million, seven hundred eighty-nine thousand, two hundred eighty-seven".