3949039 has 2 divisors, whose sum is σ = 3949040. Its totient is φ = 3949038.

The previous prime is 3949037. The next prime is 3949051. The reversal of 3949039 is 9309493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3949039 - 2¹ = 3949037 is a prime.

Together with 3949037, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3948989 and 3949007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3949037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1974519 + 1974520.

It is an arithmetic number, because the mean of its divisors is an integer number (1974520).

Almost surely, 2^3949039 is an apocalyptic number.

3949039 is a deficient number, since it is larger than the sum of its proper divisors (1).

3949039 is an equidigital number, since it uses as much as digits as its factorization.

3949039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 3949039 is about 1987.2189109406. The cubic root of 3949039 is about 158.0630923586.

The spelling of 3949039 in words is "three million, nine hundred forty-nine thousand, thirty-nine".