8638949 has 8 divisors (see below), whose sum is σ = 9478560. Its totient is φ = 7808400.

The previous prime is 8638937. The next prime is 8638951. The reversal of 8638949 is 9498368.

8638949 is digitally balanced in base 2, because in such base 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 not a de Polignac number, because 8638949 - 2⁴ = 8638933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8638909) 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, 179 + ... + 4160.

It is an arithmetic number, because the mean of its divisors is an integer number (1184820).

Almost surely, 2^8638949 is an apocalyptic number.

It is an amenable number.

8638949 is a deficient number, since it is larger than the sum of its proper divisors (839611).

8638949 is a wasteful number, since it uses less digits than its factorization.

8638949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4531.

The product of its digits is 373248, while the sum is 47.

The square root of 8638949 is about 2939.2089071721. The cubic root of 8638949 is about 205.1887929642.

The spelling of 8638949 in words is "eight million, six hundred thirty-eight thousand, nine hundred forty-nine".