427418809 has 8 divisors (see below), whose sum is σ = 441191520. Its totient is φ = 413805600.

The previous prime is 427418779. The next prime is 427418861. The reversal of 427418809 is 908814724.

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 427418809 - 2¹⁵ = 427386041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427418899) 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, 34419 + ... + 45160.

It is an arithmetic number, because the mean of its divisors is an integer number (55148940).

Almost surely, 2^427418809 is an apocalyptic number.

It is an amenable number.

427418809 is a deficient number, since it is larger than the sum of its proper divisors (13772711).

427418809 is a wasteful number, since it uses less digits than its factorization.

427418809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79751.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 427418809 is about 20674.1096301630. The cubic root of 427418809 is about 753.2709340637.

The spelling of 427418809 in words is "four hundred twenty-seven million, four hundred eighteen thousand, eight hundred nine".