3909449629 has 2 divisors, whose sum is σ = 3909449630. Its totient is φ = 3909449628.

The previous prime is 3909449561. The next prime is 3909449683. The reversal of 3909449629 is 9269449093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3878424729 + 31024900 = 62277^2 + 5570^2 .

It is a cyclic number.

It is not a de Polignac number, because 3909449629 - 2²⁵ = 3875895197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3909449629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3909449729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1954724814 + 1954724815.

It is an arithmetic number, because the mean of its divisors is an integer number (1954724815).

Almost surely, 2^3909449629 is an apocalyptic number.

It is an amenable number.

3909449629 is a deficient number, since it is larger than the sum of its proper divisors (1).

3909449629 is an equidigital number, since it uses as much as digits as its factorization.

3909449629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3779136, while the sum is 55.

The square root of 3909449629 is about 62525.5917924813. The cubic root of 3909449629 is about 1575.3311982085.

The spelling of 3909449629 in words is "three billion, nine hundred nine million, four hundred forty-nine thousand, six hundred twenty-nine".