8949021 has 16 divisors (see below), whose sum is σ = 12705984. Its totient is φ = 5583104.

The previous prime is 8949013. The next prime is 8949037. The reversal of 8949021 is 1209498.

It is a cyclic number.

It is not a de Polignac number, because 8949021 - 2³ = 8949013 is a prime.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8949071) 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, 11191 + ... + 11963.

It is an arithmetic number, because the mean of its divisors is an integer number (794124).

Almost surely, 2^8949021 is an apocalyptic number.

It is an amenable number.

8949021 is a deficient number, since it is larger than the sum of its proper divisors (3756963).

8949021 is a wasteful number, since it uses less digits than its factorization.

8949021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 8949021 is about 2991.4914340509. The cubic root of 8949021 is about 207.6148954827.

The spelling of 8949021 in words is "eight million, nine hundred forty-nine thousand, twenty-one".