1428847999 has 2 divisors, whose sum is σ = 1428848000. Its totient is φ = 1428847998.

The previous prime is 1428847997. The next prime is 1428848093. The reversal of 1428847999 is 9997488241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1428847999 - 2¹ = 1428847997 is a prime.

Together with 1428847997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428847997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714423999 + 714424000.

It is an arithmetic number, because the mean of its divisors is an integer number (714424000).

Almost surely, 2^1428847999 is an apocalyptic number.

1428847999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428847999 is an equidigital number, since it uses as much as digits as its factorization.

1428847999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 61.

The square root of 1428847999 is about 37800.1058067302. The cubic root of 1428847999 is about 1126.3205560209.

The spelling of 1428847999 in words is "one billion, four hundred twenty-eight million, eight hundred forty-seven thousand, nine hundred ninety-nine".