3147349 has 2 divisors, whose sum is σ = 3147350. Its totient is φ = 3147348.

The previous prime is 3147323. The next prime is 3147421. The reversal of 3147349 is 9437413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2992900 + 154449 = 1730^2 + 393^2 .

It is an emirp because it is prime and its reverse (9437413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3147349 - 2²¹ = 1050197 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3147349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3147049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1573674 + 1573675.

It is an arithmetic number, because the mean of its divisors is an integer number (1573675).

Almost surely, 2^3147349 is an apocalyptic number.

It is an amenable number.

3147349 is a deficient number, since it is larger than the sum of its proper divisors (1).

3147349 is an equidigital number, since it uses as much as digits as its factorization.

3147349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 3147349 is about 1774.0769430890. The cubic root of 3147349 is about 146.5485866638.

Subtracting 3147349 from its reverse (9437413), we obtain a square (6290064 = 2508²).

The spelling of 3147349 in words is "three million, one hundred forty-seven thousand, three hundred forty-nine".