1428938899 has 2 divisors, whose sum is σ = 1428938900. Its totient is φ = 1428938898.

The previous prime is 1428938897. The next prime is 1428938923. The reversal of 1428938899 is 9988398241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1428938899 - 2¹ = 1428938897 is a prime.

Together with 1428938897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1428938897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714469449 + 714469450.

It is an arithmetic number, because the mean of its divisors is an integer number (714469450).

Almost surely, 2^1428938899 is an apocalyptic number.

1428938899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428938899 is an equidigital number, since it uses as much as digits as its factorization.

1428938899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8957952, while the sum is 61.

The square root of 1428938899 is about 37801.3081651945. The cubic root of 1428938899 is about 1126.3444401494.

It can be divided in two parts, 14289 and 38899, that multiplied together give a triangular number (555827811 = T₃₃₃₄₁).

The spelling of 1428938899 in words is "one billion, four hundred twenty-eight million, nine hundred thirty-eight thousand, eight hundred ninety-nine".