7988827749 has 32 divisors (see below), whose sum is σ = 12471782400. Its totient is φ = 4546710000.

The previous prime is 7988827727. The next prime is 7988827789. The reversal of 7988827749 is 9477288897.

It is not a de Polignac number, because 7988827749 - 2⁷ = 7988827621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7988827789) 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 in 31 ways as a sum of consecutive naturals, for example, 242814 + ... + 273744.

It is an arithmetic number, because the mean of its divisors is an integer number (389743200).

Almost surely, 2^7988827749 is an apocalyptic number.

It is an amenable number.

7988827749 is a deficient number, since it is larger than the sum of its proper divisors (4482954651).

7988827749 is a wasteful number, since it uses less digits than its factorization.

7988827749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31206 (or 31192 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 69.

The square root of 7988827749 is about 89380.2424979928. The cubic root of 7988827749 is about 1999.0685453468.

The spelling of 7988827749 in words is "seven billion, nine hundred eighty-eight million, eight hundred twenty-seven thousand, seven hundred forty-nine".