426333491 has 2 divisors, whose sum is σ = 426333492. Its totient is φ = 426333490.

The previous prime is 426333473. The next prime is 426333493. The reversal of 426333491 is 194333624.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426333491 is a prime.

Together with 426333493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (426333493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213166745 + 213166746.

It is an arithmetic number, because the mean of its divisors is an integer number (213166746).

Almost surely, 2^426333491 is an apocalyptic number.

426333491 is a deficient number, since it is larger than the sum of its proper divisors (1).

426333491 is an equidigital number, since it uses as much as digits as its factorization.

426333491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 35.

The square root of 426333491 is about 20647.8447059251. The cubic root of 426333491 is about 752.6328156351.

The spelling of 426333491 in words is "four hundred twenty-six million, three hundred thirty-three thousand, four hundred ninety-one".