8939849 has 2 divisors, whose sum is σ = 8939850. Its totient is φ = 8939848.

The previous prime is 8939831. The next prime is 8939863. The reversal of 8939849 is 9489398.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8526400 + 413449 = 2920^2 + 643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8939849 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 8939797 and 8939806.

It is not a weakly prime, because it can be changed into another prime (8939809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4469924 + 4469925.

It is an arithmetic number, because the mean of its divisors is an integer number (4469925).

Almost surely, 2^8939849 is an apocalyptic number.

It is an amenable number.

8939849 is a deficient number, since it is larger than the sum of its proper divisors (1).

8939849 is an equidigital number, since it uses as much as digits as its factorization.

8939849 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 8939849 is about 2989.9580264612. The cubic root of 8939849 is about 207.5439419204.

The spelling of 8939849 in words is "eight million, nine hundred thirty-nine thousand, eight hundred forty-nine".