1428808399 has 2 divisors, whose sum is σ = 1428808400. Its totient is φ = 1428808398.

The previous prime is 1428808387. The next prime is 1428808411. The reversal of 1428808399 is 9938088241.

It is a balanced prime because it is at equal distance from previous prime (1428808387) and next prime (1428808411).

It is an emirp because it is prime and its reverse (9938088241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1428808399 - 2²⁵ = 1395253967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428808309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714404199 + 714404200.

It is an arithmetic number, because the mean of its divisors is an integer number (714404200).

Almost surely, 2^1428808399 is an apocalyptic number.

1428808399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428808399 is an equidigital number, since it uses as much as digits as its factorization.

1428808399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 52.

The square root of 1428808399 is about 37799.5819950433. The cubic root of 1428808399 is about 1126.3101507373.

The spelling of 1428808399 in words is "one billion, four hundred twenty-eight million, eight hundred eight thousand, three hundred ninety-nine".