3909739 has 2 divisors, whose sum is σ = 3909740. Its totient is φ = 3909738.

The previous prime is 3909733. The next prime is 3909749. The reversal of 3909739 is 9379093.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3909739 - 2⁵ = 3909707 is a prime.

It is not a weakly prime, because it can be changed into another prime (3909733) 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, 1954869 + 1954870.

It is an arithmetic number, because the mean of its divisors is an integer number (1954870).

Almost surely, 2^3909739 is an apocalyptic number.

3909739 is a deficient number, since it is larger than the sum of its proper divisors (1).

3909739 is an equidigital number, since it uses as much as digits as its factorization.

3909739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927, while the sum is 40.

The square root of 3909739 is about 1977.3059955404. The cubic root of 3909739 is about 157.5370065053.

The spelling of 3909739 in words is "three million, nine hundred nine thousand, seven hundred thirty-nine".