427986179 has 4 divisors (see below), whose sum is σ = 428684976. Its totient is φ = 427287384.

The previous prime is 427986173. The next prime is 427986193. The reversal of 427986179 is 971689724.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427986179 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 427986179.

It is not an unprimeable number, because it can be changed into a prime (427986173) 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 3 ways as a sum of consecutive naturals, for example, 348479 + ... + 349704.

It is an arithmetic number, because the mean of its divisors is an integer number (107171244).

Almost surely, 2^427986179 is an apocalyptic number.

427986179 is a deficient number, since it is larger than the sum of its proper divisors (698797).

427986179 is an equidigital number, since it uses as much as digits as its factorization.

427986179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698796.

The product of its digits is 1524096, while the sum is 53.

The square root of 427986179 is about 20687.8268312551. The cubic root of 427986179 is about 753.6040923561.

The spelling of 427986179 in words is "four hundred twenty-seven million, nine hundred eighty-six thousand, one hundred seventy-nine".