427709109 has 8 divisors (see below), whose sum is σ = 570461472. Its totient is φ = 285048080.

The previous prime is 427709083. The next prime is 427709129. The reversal of 427709109 is 901907724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 427709109 - 2²³ = 419320501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427709129) 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 7 ways as a sum of consecutive naturals, for example, 11034 + ... + 31259.

It is an arithmetic number, because the mean of its divisors is an integer number (71307684).

Almost surely, 2^427709109 is an apocalyptic number.

It is an amenable number.

427709109 is a deficient number, since it is larger than the sum of its proper divisors (142752363).

427709109 is a wasteful number, since it uses less digits than its factorization.

427709109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45667.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 427709109 is about 20681.1292970186. The cubic root of 427709109 is about 753.4414343309.

The spelling of 427709109 in words is "four hundred twenty-seven million, seven hundred nine thousand, one hundred nine".