426099663 has 16 divisors (see below), whose sum is σ = 688646400. Its totient is φ = 258242040.

The previous prime is 426099649. The next prime is 426099761. The reversal of 426099663 is 366990624.

It is not a de Polignac number, because 426099663 - 2⁵ = 426099631 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426099463) 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 in 15 ways as a sum of consecutive naturals, for example, 717043 + ... + 717636.

It is an arithmetic number, because the mean of its divisors is an integer number (43040400).

Almost surely, 2^426099663 is an apocalyptic number.

426099663 is a deficient number, since it is larger than the sum of its proper divisors (262546737).

426099663 is a wasteful number, since it uses less digits than its factorization.

426099663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434699 (or 1434693 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The square root of 426099663 is about 20642.1816434213. The cubic root of 426099663 is about 752.4951934734.

The spelling of 426099663 in words is "four hundred twenty-six million, ninety-nine thousand, six hundred sixty-three".