8149989 has 8 divisors (see below), whose sum is σ = 10899360. Its totient is φ = 5416976.

The previous prime is 8149979. The next prime is 8149991. The reversal of 8149989 is 9899418.

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 8149989 - 2⁷ = 8149861 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8149949) 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, 2874 + ... + 4955.

It is an arithmetic number, because the mean of its divisors is an integer number (1362420).

Almost surely, 2^8149989 is an apocalyptic number.

It is an amenable number.

8149989 is a deficient number, since it is larger than the sum of its proper divisors (2749371).

8149989 is a wasteful number, since it uses less digits than its factorization.

8149989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8179.

The product of its digits is 186624, while the sum is 48.

The square root of 8149989 is about 2854.8185581574. The cubic root of 8149989 is about 201.2421773383.

The spelling of 8149989 in words is "eight million, one hundred forty-nine thousand, nine hundred eighty-nine".