8149689 has 12 divisors (see below), whose sum is σ = 12391600. Its totient is φ = 5147064.

The previous prime is 8149663. The next prime is 8149699. The reversal of 8149689 is 9869418.

8149689 is a `hidden beast` number, since 81 + 496 + 89 = 666.

It is not a de Polignac number, because 8149689 - 2⁹ = 8149177 is a prime.

It is a Duffinian number.

8149689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8149619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23659 + ... + 24000.

Almost surely, 2^8149689 is an apocalyptic number.

It is an amenable number.

8149689 is a deficient number, since it is larger than the sum of its proper divisors (4241911).

8149689 is a wasteful number, since it uses less digits than its factorization.

8149689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47684 (or 47681 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 8149689 is about 2854.7660149301. The cubic root of 8149689 is about 201.2397080755.

It can be divided in two parts, 81 and 49689, that added together give a triangular number (49770 = T₃₁₅).

The spelling of 8149689 in words is "eight million, one hundred forty-nine thousand, six hundred eighty-nine".