427306889 has 4 divisors (see below), whose sum is σ = 432108180. Its totient is φ = 422505600.

The previous prime is 427306877. The next prime is 427306907. The reversal of 427306889 is 988603724.

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

It can be written as a sum of positive squares in 2 ways, for example, as 141967225 + 285339664 = 11915^2 + 16892^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427306889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427306289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2400512 + ... + 2400689.

It is an arithmetic number, because the mean of its divisors is an integer number (108027045).

Almost surely, 2^427306889 is an apocalyptic number.

It is an amenable number.

427306889 is a deficient number, since it is larger than the sum of its proper divisors (4801291).

427306889 is an equidigital number, since it uses as much as digits as its factorization.

427306889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4801290.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 427306889 is about 20671.4026858363. The cubic root of 427306889 is about 753.2051801000.

The spelling of 427306889 in words is "four hundred twenty-seven million, three hundred six thousand, eight hundred eighty-nine".