4149839 has 2 divisors, whose sum is σ = 4149840. Its totient is φ = 4149838.

The previous prime is 4149833. The next prime is 4149881. The reversal of 4149839 is 9389414.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4149839 - 2¹⁶ = 4084303 is a prime.

It is a Sophie Germain 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 (4149833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2074919 + 2074920.

It is an arithmetic number, because the mean of its divisors is an integer number (2074920).

Almost surely, 2^4149839 is an apocalyptic number.

4149839 is a deficient number, since it is larger than the sum of its proper divisors (1).

4149839 is an equidigital number, since it uses as much as digits as its factorization.

4149839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 4149839 is about 2037.1153624672. The cubic root of 4149839 is about 160.6979793732.

The spelling of 4149839 in words is "four million, one hundred forty-nine thousand, eight hundred thirty-nine".