9933981877 has 4 divisors (see below), whose sum is σ = 9934610220. Its totient is φ = 9933353536.

The previous prime is 9933981859. The next prime is 9933981949. The reversal of 9933981877 is 7781893399.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9365207076 + 568774801 = 96774^2 + 23849^2 .

It is a cyclic number.

It is not a de Polignac number, because 9933981877 - 2⁷ = 9933981749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9933981847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289828 + ... + 322285.

It is an arithmetic number, because the mean of its divisors is an integer number (2483652555).

Almost surely, 2^9933981877 is an apocalyptic number.

It is an amenable number.

9933981877 is a deficient number, since it is larger than the sum of its proper divisors (628343).

9933981877 is a wasteful number, since it uses less digits than its factorization.

9933981877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628342.

The product of its digits is 20575296, while the sum is 64.

The square root of 9933981877 is about 99669.3627801442. The cubic root of 9933981877 is about 2149.6831605938.

The spelling of 9933981877 in words is "nine billion, nine hundred thirty-three million, nine hundred eighty-one thousand, eight hundred seventy-seven".