3138449 has 2 divisors, whose sum is σ = 3138450. Its totient is φ = 3138448.

The previous prime is 3138403. The next prime is 3138469. The reversal of 3138449 is 9448313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2739025 + 399424 = 1655^2 + 632^2 .

It is a cyclic number.

It is not a de Polignac number, because 3138449 - 2⁸ = 3138193 is a prime.

It is not a weakly prime, because it can be changed into another prime (3138469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569224 + 1569225.

It is an arithmetic number, because the mean of its divisors is an integer number (1569225).

Almost surely, 2^3138449 is an apocalyptic number.

It is an amenable number.

3138449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3138449 is an equidigital number, since it uses as much as digits as its factorization.

3138449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 3138449 is about 1771.5668206421. The cubic root of 3138449 is about 146.4103206964.

The spelling of 3138449 in words is "three million, one hundred thirty-eight thousand, four hundred forty-nine".