427889459 has 2 divisors, whose sum is σ = 427889460. Its totient is φ = 427889458.

The previous prime is 427889411. The next prime is 427889471. The reversal of 427889459 is 954988724.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427889459 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (427889479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213944729 + 213944730.

It is an arithmetic number, because the mean of its divisors is an integer number (213944730).

Almost surely, 2^427889459 is an apocalyptic number.

427889459 is a deficient number, since it is larger than the sum of its proper divisors (1).

427889459 is an equidigital number, since it uses as much as digits as its factorization.

427889459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 56.

The square root of 427889459 is about 20685.4890925982. The cubic root of 427889459 is about 753.5473194331.

The spelling of 427889459 in words is "four hundred twenty-seven million, eight hundred eighty-nine thousand, four hundred fifty-nine".