3147329 has 4 divisors (see below), whose sum is σ = 3332484. Its totient is φ = 2962176.

The previous prime is 3147323. The next prime is 3147349. The reversal of 3147329 is 9237413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9237413 = 61 ⋅151433.

It can be written as a sum of positive squares in 2 ways, for example, as 2096704 + 1050625 = 1448^2 + 1025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3147329 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3147323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92552 + ... + 92585.

It is an arithmetic number, because the mean of its divisors is an integer number (833121).

Almost surely, 2^3147329 is an apocalyptic number.

It is an amenable number.

3147329 is a deficient number, since it is larger than the sum of its proper divisors (185155).

3147329 is a wasteful number, since it uses less digits than its factorization.

3147329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185154.

The product of its digits is 4536, while the sum is 29.

The square root of 3147329 is about 1774.0713063459. The cubic root of 3147329 is about 146.5482762461.

The spelling of 3147329 in words is "three million, one hundred forty-seven thousand, three hundred twenty-nine".