8949839 has 2 divisors, whose sum is σ = 8949840. Its totient is φ = 8949838.

The previous prime is 8949823. The next prime is 8949869. The reversal of 8949839 is 9389498.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8949839 - 2⁴ = 8949823 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8949869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4474919 + 4474920.

It is an arithmetic number, because the mean of its divisors is an integer number (4474920).

Almost surely, 2^8949839 is an apocalyptic number.

8949839 is a deficient number, since it is larger than the sum of its proper divisors (1).

8949839 is an equidigital number, since it uses as much as digits as its factorization.

8949839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 50.

The square root of 8949839 is about 2991.6281520269. The cubic root of 8949839 is about 207.6212210837.

The spelling of 8949839 in words is "eight million, nine hundred forty-nine thousand, eight hundred thirty-nine".