9988455 has 8 divisors (see below), whose sum is σ = 15981552. Its totient is φ = 5327168.

The previous prime is 9988453. The next prime is 9988481. The reversal of 9988455 is 5548899.

It is a happy number.

9988455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 9988455 - 2¹ = 9988453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332934 + ... + 332963.

It is an arithmetic number, because the mean of its divisors is an integer number (1997694).

Almost surely, 2^9988455 is an apocalyptic number.

9988455 is a deficient number, since it is larger than the sum of its proper divisors (5993097).

9988455 is a wasteful number, since it uses less digits than its factorization.

9988455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665905.

The product of its digits is 518400, while the sum is 48.

The square root of 9988455 is about 3160.4517082215. The cubic root of 9988455 is about 215.3605272479.

It can be divided in two parts, 998 and 8455, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 9988455 in words is "nine million, nine hundred eighty-eight thousand, four hundred fifty-five".