426591109 has 6 divisors (see below), whose sum is σ = 496238694. Its totient is φ = 365649480.

The previous prime is 426591091. The next prime is 426591133. The reversal of 426591109 is 901195624.

It can be written as a sum of positive squares in only one way, i.e., 225660484 + 200930625 = 15022^2 + 14175^2 .

It is not a de Polignac number, because 426591109 - 2¹³ = 426582917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426591169) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4352922 + ... + 4353019.

It is an arithmetic number, because the mean of its divisors is an integer number (82706449).

Almost surely, 2^426591109 is an apocalyptic number.

426591109 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

426591109 is a deficient number, since it is larger than the sum of its proper divisors (69647585).

426591109 is an equidigital number, since it uses as much as digits as its factorization.

426591109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8705955 (or 8705948 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 426591109 is about 20654.0821388896. The cubic root of 426591109 is about 752.7843814272.

The spelling of 426591109 in words is "four hundred twenty-six million, five hundred ninety-one thousand, one hundred nine".