7988770469 has 2 divisors, whose sum is σ = 7988770470. Its totient is φ = 7988770468.

The previous prime is 7988770429. The next prime is 7988770477. The reversal of 7988770469 is 9640778897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7987890625 + 879844 = 89375^2 + 938^2 .

It is a cyclic number.

It is not a de Polignac number, because 7988770469 - 2²⁰ = 7987721893 is a prime.

It is a super-2 number, since 2×7988770469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7988770429) 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, 3994385234 + 3994385235.

It is an arithmetic number, because the mean of its divisors is an integer number (3994385235).

Almost surely, 2^7988770469 is an apocalyptic number.

It is an amenable number.

7988770469 is a deficient number, since it is larger than the sum of its proper divisors (1).

7988770469 is an equidigital number, since it uses as much as digits as its factorization.

7988770469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42674688, while the sum is 65.

The square root of 7988770469 is about 89379.9220686615. The cubic root of 7988770469 is about 1999.0637675528.

The spelling of 7988770469 in words is "seven billion, nine hundred eighty-eight million, seven hundred seventy thousand, four hundred sixty-nine".