6139849 has 2 divisors, whose sum is σ = 6139850. Its totient is φ = 6139848.

The previous prime is 6139807. The next prime is 6139853. The reversal of 6139849 is 9489316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4276624 + 1863225 = 2068^2 + 1365^2 .

It is a cyclic number.

It is not a de Polignac number, because 6139849 - 2¹¹ = 6137801 is a prime.

It is not a weakly prime, because it can be changed into another prime (6139249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3069924 + 3069925.

It is an arithmetic number, because the mean of its divisors is an integer number (3069925).

Almost surely, 2^6139849 is an apocalyptic number.

It is an amenable number.

6139849 is a deficient number, since it is larger than the sum of its proper divisors (1).

6139849 is an equidigital number, since it uses as much as digits as its factorization.

6139849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 6139849 is about 2477.8718691652. The cubic root of 6139849 is about 183.1130220435.

The spelling of 6139849 in words is "six million, one hundred thirty-nine thousand, eight hundred forty-nine".