3129289 has 2 divisors, whose sum is σ = 3129290. Its totient is φ = 3129288.

The previous prime is 3129271. The next prime is 3129323. The reversal of 3129289 is 9829213.

It is an a-pointer prime, because the next prime (3129323) can be obtained adding 3129289 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2975625 + 153664 = 1725^2 + 392^2 .

It is a cyclic number.

It is not a de Polignac number, because 3129289 - 2⁵ = 3129257 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3129209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564644 + 1564645.

It is an arithmetic number, because the mean of its divisors is an integer number (1564645).

Almost surely, 2^3129289 is an apocalyptic number.

It is an amenable number.

3129289 is a deficient number, since it is larger than the sum of its proper divisors (1).

3129289 is an equidigital number, since it uses as much as digits as its factorization.

3129289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 34.

The square root of 3129289 is about 1768.9796494024. The cubic root of 3129289 is about 146.2677422652.

The spelling of 3129289 in words is "three million, one hundred twenty-nine thousand, two hundred eighty-nine".