9149999987 has 8 divisors (see below), whose sum is σ = 9176592096. Its totient is φ = 9123440832.

The previous prime is 9149999951. The next prime is 9150000029. The reversal of 9149999987 is 7899999419.

9149999987 is digitally balanced in base 2 and base 3, because in such bases 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 a de Polignac number, because none of the positive numbers 2^k-9149999987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9149999387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614543 + ... + 629255.

It is an arithmetic number, because the mean of its divisors is an integer number (1147074012).

Almost surely, 2^9149999987 is an apocalyptic number.

9149999987 is a deficient number, since it is larger than the sum of its proper divisors (26592109).

9149999987 is a wasteful number, since it uses less digits than its factorization.

9149999987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16477.

The product of its digits is 119042784, while the sum is 74.

The square root of 9149999987 is about 95655.6322805929. The cubic root of 9149999987 is about 2091.5762311028.

The spelling of 9149999987 in words is "nine billion, one hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred eighty-seven".