3139445249 has 2 divisors, whose sum is σ = 3139445250. Its totient is φ = 3139445248.

The previous prime is 3139445201. The next prime is 3139445251. The reversal of 3139445249 is 9425449313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2352250000 + 787195249 = 48500^2 + 28057^2 .

It is a cyclic number.

It is not a de Polignac number, because 3139445249 - 2²⁴ = 3122668033 is a prime.

It is a super-2 number, since 2×3139445249² = 19712232942937344002, which contains 22 as substring.

Together with 3139445251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3139444249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569722624 + 1569722625.

It is an arithmetic number, because the mean of its divisors is an integer number (1569722625).

Almost surely, 2^3139445249 is an apocalyptic number.

It is an amenable number.

3139445249 is a deficient number, since it is larger than the sum of its proper divisors (1).

3139445249 is an equidigital number, since it uses as much as digits as its factorization.

3139445249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 44.

The square root of 3139445249 is about 56030.7527077765. The cubic root of 3139445249 is about 1464.2581090661.

The spelling of 3139445249 in words is "three billion, one hundred thirty-nine million, four hundred forty-five thousand, two hundred forty-nine".