426339899 has 2 divisors, whose sum is σ = 426339900. Its totient is φ = 426339898.

The previous prime is 426339857. The next prime is 426339967. The reversal of 426339899 is 998933624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 426339899 - 2¹⁶ = 426274363 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 426339899.

It is not a weakly prime, because it can be changed into another prime (426339829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213169949 + 213169950.

It is an arithmetic number, because the mean of its divisors is an integer number (213169950).

Almost surely, 2^426339899 is an apocalyptic number.

426339899 is a deficient number, since it is larger than the sum of its proper divisors (1).

426339899 is an equidigital number, since it uses as much as digits as its factorization.

426339899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 53.

The square root of 426339899 is about 20647.9998789229. Note that the first 3 decimals coincide. The cubic root of 426339899 is about 752.6365864288.

The spelling of 426339899 in words is "four hundred twenty-six million, three hundred thirty-nine thousand, eight hundred ninety-nine".