426447679 has 4 divisors (see below), whose sum is σ = 487368784. Its totient is φ = 365526576.

The previous prime is 426447667. The next prime is 426447689. The reversal of 426447679 is 976744624.

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

It is a cyclic number.

It is not a de Polignac number, because 426447679 - 2¹³ = 426439487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426447689) 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, 30460542 + ... + 30460555.

It is an arithmetic number, because the mean of its divisors is an integer number (121842196).

Almost surely, 2^426447679 is an apocalyptic number.

426447679 is a deficient number, since it is larger than the sum of its proper divisors (60921105).

426447679 is an equidigital number, since it uses as much as digits as its factorization.

426447679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60921104.

The product of its digits is 2032128, while the sum is 49.

The square root of 426447679 is about 20650.6096520175. The cubic root of 426447679 is about 752.7000040108.

The spelling of 426447679 in words is "four hundred twenty-six million, four hundred forty-seven thousand, six hundred seventy-nine".