8669949 has 16 divisors (see below), whose sum is σ = 12503808. Its totient is φ = 5322752.

The previous prime is 8669939. The next prime is 8669963. The reversal of 8669949 is 9499668.

8669949 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8669949 - 2⁷ = 8669821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8669929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 589 + ... + 4205.

It is an arithmetic number, because the mean of its divisors is an integer number (781488).

Almost surely, 2^8669949 is an apocalyptic number.

It is an amenable number.

8669949 is a deficient number, since it is larger than the sum of its proper divisors (3833859).

8669949 is a wasteful number, since it uses less digits than its factorization.

8669949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3684.

The product of its digits is 839808, while the sum is 51.

The square root of 8669949 is about 2944.4777126003. The cubic root of 8669949 is about 205.4339330959.

The spelling of 8669949 in words is "eight million, six hundred sixty-nine thousand, nine hundred forty-nine".