9887955 has 48 divisors (see below), whose sum is σ = 20093184. Its totient is φ = 4105920.

The previous prime is 9887939. The next prime is 9887971. The reversal of 9887955 is 5597889.

9887955 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9887939) and next prime (9887971).

It is not a de Polignac number, because 9887955 - 2⁴ = 9887939 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9887898 and 9887907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7474 + ... + 8696.

It is an arithmetic number, because the mean of its divisors is an integer number (418608).

Almost surely, 2^9887955 is an apocalyptic number.

9887955 is an abundant number, since it is smaller than the sum of its proper divisors (10205229).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9887955 is a wasteful number, since it uses less digits than its factorization.

9887955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256 (or 1249 counting only the distinct ones).

The product of its digits is 907200, while the sum is 51.

The square root of 9887955 is about 3144.5118858099. The cubic root of 9887955 is about 214.6357994895.

It can be divided in two parts, 98879 and 55, that multiplied together give a palindrome (5438345).

The spelling of 9887955 in words is "nine million, eight hundred eighty-seven thousand, nine hundred fifty-five".