1288830929 has 2 divisors, whose sum is σ = 1288830930. Its totient is φ = 1288830928.

The previous prime is 1288830923. The next prime is 1288830973. The reversal of 1288830929 is 9290388821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666827329 + 622003600 = 25823^2 + 24940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1288830929 is a prime.

It is a super-2 number, since 2×1288830929² = 3322170327094006082, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1288830923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644415464 + 644415465.

It is an arithmetic number, because the mean of its divisors is an integer number (644415465).

Almost surely, 2^1288830929 is an apocalyptic number.

It is an amenable number.

1288830929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288830929 is an equidigital number, since it uses as much as digits as its factorization.

1288830929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 1288830929 is about 35900.2914890673. The cubic root of 1288830929 is about 1088.2582876121.

The spelling of 1288830929 in words is "one billion, two hundred eighty-eight million, eight hundred thirty thousand, nine hundred twenty-nine".