426377809 has 16 divisors (see below), whose sum is σ = 512576064. Its totient is φ = 349473600.

The previous prime is 426377797. The next prime is 426377827. The reversal of 426377809 is 908773624.

It is a cyclic number.

It is not a de Polignac number, because 426377809 - 2²⁵ = 392823377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (426377869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28522 + ... + 40819.

It is an arithmetic number, because the mean of its divisors is an integer number (32036004).

Almost surely, 2^426377809 is an apocalyptic number.

It is an amenable number.

426377809 is a deficient number, since it is larger than the sum of its proper divisors (86198255).

426377809 is a wasteful number, since it uses less digits than its factorization.

426377809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69408.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 426377809 is about 20648.9178651086. The cubic root of 426377809 is about 752.6588938314.

The spelling of 426377809 in words is "four hundred twenty-six million, three hundred seventy-seven thousand, eight hundred nine".