9148987 has 4 divisors (see below), whose sum is σ = 9155056. Its totient is φ = 9142920.

The previous prime is 9148961. The next prime is 9148991. The reversal of 9148987 is 7898419.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9148987 is a prime.

It is a Duffinian number.

9148987 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9148927) 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, 1162 + ... + 4432.

It is an arithmetic number, because the mean of its divisors is an integer number (2288764).

Almost surely, 2^9148987 is an apocalyptic number.

9148987 is a deficient number, since it is larger than the sum of its proper divisors (6069).

9148987 is a wasteful number, since it uses less digits than its factorization.

9148987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6068.

The product of its digits is 145152, while the sum is 46.

The square root of 9148987 is about 3024.7292440812. The cubic root of 9148987 is about 209.1499042843.

It can be divided in two parts, 9 and 148987, that added together give a square (148996 = 386²).

The spelling of 9148987 in words is "nine million, one hundred forty-eight thousand, nine hundred eighty-seven".