428887772899 has 2 divisors, whose sum is σ = 428887772900. Its totient is φ = 428887772898.

The previous prime is 428887772851. The next prime is 428887772903. The reversal of 428887772899 is 998277788824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428887772899 - 2¹⁵ = 428887740131 is a prime.

It is not a weakly prime, because it can be changed into another prime (428887772849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214443886449 + 214443886450.

It is an arithmetic number, because the mean of its divisors is an integer number (214443886450).

Almost surely, 2^428887772899 is an apocalyptic number.

428887772899 is a deficient number, since it is larger than the sum of its proper divisors (1).

428887772899 is an equidigital number, since it uses as much as digits as its factorization.

428887772899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1820786688, while the sum is 79.

The spelling of 428887772899 in words is "four hundred twenty-eight billion, eight hundred eighty-seven million, seven hundred seventy-two thousand, eight hundred ninety-nine".