428159827 has 2 divisors, whose sum is σ = 428159828. Its totient is φ = 428159826.

The previous prime is 428159791. The next prime is 428159861. The reversal of 428159827 is 728951824.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428159827 is a prime.

It is not a weakly prime, because it can be changed into another prime (428159867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214079913 + 214079914.

It is an arithmetic number, because the mean of its divisors is an integer number (214079914).

Almost surely, 2^428159827 is an apocalyptic number.

428159827 is a deficient number, since it is larger than the sum of its proper divisors (1).

428159827 is an equidigital number, since it uses as much as digits as its factorization.

428159827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 46.

The square root of 428159827 is about 20692.0232698497. The cubic root of 428159827 is about 753.7059991898.

The spelling of 428159827 in words is "four hundred twenty-eight million, one hundred fifty-nine thousand, eight hundred twenty-seven".