3969709 has 2 divisors, whose sum is σ = 3969710. Its totient is φ = 3969708.

The previous prime is 3969703. The next prime is 3969733. The reversal of 3969709 is 9079693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3694084 + 275625 = 1922^2 + 525^2 .

It is a cyclic number.

It is not a de Polignac number, because 3969709 - 2⁵ = 3969677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3969703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1984854 + 1984855.

It is an arithmetic number, because the mean of its divisors is an integer number (1984855).

Almost surely, 2^3969709 is an apocalyptic number.

It is an amenable number.

3969709 is a deficient number, since it is larger than the sum of its proper divisors (1).

3969709 is an equidigital number, since it uses as much as digits as its factorization.

3969709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 3969709 is about 1992.4128588222. The cubic root of 3969709 is about 158.3383897431.

The spelling of 3969709 in words is "three million, nine hundred sixty-nine thousand, seven hundred nine".