8999138 has 8 divisors (see below), whose sum is σ = 13596240. Its totient is φ = 4467060.

The previous prime is 8999113. The next prime is 8999143. The reversal of 8999138 is 8319998.

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

It is a junction number, because it is equal to n+sod(n) for n = 8999092 and 8999101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15908 + ... + 16463.

It is an arithmetic number, because the mean of its divisors is an integer number (1699530).

Almost surely, 2^8999138 is an apocalyptic number.

8999138 is a deficient number, since it is larger than the sum of its proper divisors (4597102).

8999138 is a wasteful number, since it uses less digits than its factorization.

8999138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32512.

The product of its digits is 139968, while the sum is 47.

The square root of 8999138 is about 2999.8563298932. The cubic root of 8999138 is about 208.0017412330.

The spelling of 8999138 in words is "eight million, nine hundred ninety-nine thousand, one hundred thirty-eight".