426649499 has 4 divisors (see below), whose sum is σ = 427526064. Its totient is φ = 425772936.

The previous prime is 426649481. The next prime is 426649513. The reversal of 426649499 is 994946624.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426649499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 426649499.

It is not an unprimeable number, because it can be changed into a prime (426649439) 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 3 ways as a sum of consecutive naturals, for example, 437552 + ... + 438525.

It is an arithmetic number, because the mean of its divisors is an integer number (106881516).

Almost surely, 2^426649499 is an apocalyptic number.

426649499 is a deficient number, since it is larger than the sum of its proper divisors (876565).

426649499 is an equidigital number, since it uses as much as digits as its factorization.

426649499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876564.

The product of its digits is 3359232, while the sum is 53.

The square root of 426649499 is about 20655.4956125482. The cubic root of 426649499 is about 752.8187258489.

The spelling of 426649499 in words is "four hundred twenty-six million, six hundred forty-nine thousand, four hundred ninety-nine".