9955877387 has 4 divisors (see below), whose sum is σ = 9959607456. Its totient is φ = 9952147320.

The previous prime is 9955877377. The next prime is 9955877423. The reversal of 9955877387 is 7837785599.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7837785599 = 7 ⋅1119683657.

It is a cyclic number.

It is not a de Polignac number, because 9955877387 - 2²⁸ = 9687441931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9955877377) 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, 1861028 + ... + 1866369.

It is an arithmetic number, because the mean of its divisors is an integer number (2489901864).

Almost surely, 2^9955877387 is an apocalyptic number.

9955877387 is a deficient number, since it is larger than the sum of its proper divisors (3730069).

9955877387 is a wasteful number, since it uses less digits than its factorization.

9955877387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730068.

The product of its digits is 133358400, while the sum is 68.

The square root of 9955877387 is about 99779.1430460294. The cubic root of 9955877387 is about 2151.2613753457.

The spelling of 9955877387 in words is "nine billion, nine hundred fifty-five million, eight hundred seventy-seven thousand, three hundred eighty-seven".