9955777047 has 4 divisors (see below), whose sum is σ = 13274369400. Its totient is φ = 6637184696.

The previous prime is 9955777037. The next prime is 9955777067. The reversal of 9955777047 is 7407775599.

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

It is a cyclic number.

It is not a de Polignac number, because 9955777047 - 2¹⁸ = 9955514903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9955777037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1659296172 + ... + 1659296177.

It is an arithmetic number, because the mean of its divisors is an integer number (3318592350).

Almost surely, 2^9955777047 is an apocalyptic number.

9955777047 is a deficient number, since it is larger than the sum of its proper divisors (3318592353).

9955777047 is a wasteful number, since it uses less digits than its factorization.

9955777047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318592352.

The product of its (nonzero) digits is 19448100, while the sum is 60.

The square root of 9955777047 is about 99778.6402342706. The cubic root of 9955777047 is about 2151.2541481811.

The spelling of 9955777047 in words is "nine billion, nine hundred fifty-five million, seven hundred seventy-seven thousand, forty-seven".