9977887799 has 8 divisors (see below), whose sum is σ = 10886014992. Its totient is φ = 9069935040.

The previous prime is 9977887771. The next prime is 9977887817.

9977887799 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9977887799 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9977887729) 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 7 ways as a sum of consecutive naturals, for example, 95237 + ... + 170369.

It is an arithmetic number, because the mean of its divisors is an integer number (1360751874).

Almost surely, 2^9977887799 is an apocalyptic number.

9977887799 is a deficient number, since it is larger than the sum of its proper divisors (908127193).

9977887799 is a wasteful number, since it uses less digits than its factorization.

9977887799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87217.

The product of its digits is 1008189504, while the sum is 80.

The square root of 9977887799 is about 99889.3778086539. The cubic root of 9977887799 is about 2152.8455417065.

The spelling of 9977887799 in words is "nine billion, nine hundred seventy-seven million, eight hundred eighty-seven thousand, seven hundred ninety-nine".