3159649 has 2 divisors, whose sum is σ = 3159650. Its totient is φ = 3159648.

The previous prime is 3159647. The next prime is 3159677. The reversal of 3159649 is 9469513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1871424 + 1288225 = 1368^2 + 1135^2 .

It is a cyclic number.

It is not a de Polignac number, because 3159649 - 2¹ = 3159647 is a prime.

Together with 3159647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3159641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1579824 + 1579825.

It is an arithmetic number, because the mean of its divisors is an integer number (1579825).

Almost surely, 2^3159649 is an apocalyptic number.

It is an amenable number.

3159649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3159649 is an equidigital number, since it uses as much as digits as its factorization.

3159649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 37.

The square root of 3159649 is about 1777.5401542581. The cubic root of 3159649 is about 146.7392449555.

The spelling of 3159649 in words is "three million, one hundred fifty-nine thousand, six hundred forty-nine".