427859889 has 4 divisors (see below), whose sum is σ = 570479856. Its totient is φ = 285239924.

The previous prime is 427859863. The next prime is 427859891. The reversal of 427859889 is 988958724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 427859889 - 2¹² = 427855793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (427859849) 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, 71309979 + ... + 71309984.

It is an arithmetic number, because the mean of its divisors is an integer number (142619964).

Almost surely, 2^427859889 is an apocalyptic number.

It is an amenable number.

427859889 is a deficient number, since it is larger than the sum of its proper divisors (142619967).

427859889 is a wasteful number, since it uses less digits than its factorization.

427859889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142619966.

The product of its digits is 11612160, while the sum is 60.

The square root of 427859889 is about 20684.7743279930. The cubic root of 427859889 is about 753.5299606604.

The spelling of 427859889 in words is "four hundred twenty-seven million, eight hundred fifty-nine thousand, eight hundred eighty-nine".