1428839911 has 2 divisors, whose sum is σ = 1428839912. Its totient is φ = 1428839910.

The previous prime is 1428839891. The next prime is 1428839917. The reversal of 1428839911 is 1199388241.

It is a strong prime.

It is an emirp because it is prime and its reverse (1199388241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1428839911 - 2¹¹ = 1428837863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428839917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714419955 + 714419956.

It is an arithmetic number, because the mean of its divisors is an integer number (714419956).

Almost surely, 2^1428839911 is an apocalyptic number.

1428839911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428839911 is an equidigital number, since it uses as much as digits as its factorization.

1428839911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 46.

The square root of 1428839911 is about 37799.9988227513. The cubic root of 1428839911 is about 1126.3184308362.

The spelling of 1428839911 in words is "one billion, four hundred twenty-eight million, eight hundred thirty-nine thousand, nine hundred eleven".