6423449 has 2 divisors, whose sum is σ = 6423450. Its totient is φ = 6423448.

The previous prime is 6423427. The next prime is 6423481. The reversal of 6423449 is 9443246.

It is an a-pointer prime, because the next prime (6423481) can be obtained adding 6423449 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5031049 + 1392400 = 2243^2 + 1180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6423449 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (6423149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3211724 + 3211725.

It is an arithmetic number, because the mean of its divisors is an integer number (3211725).

Almost surely, 2^6423449 is an apocalyptic number.

It is an amenable number.

6423449 is a deficient number, since it is larger than the sum of its proper divisors (1).

6423449 is an equidigital number, since it uses as much as digits as its factorization.

6423449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 32.

The square root of 6423449 is about 2534.4524063395. The cubic root of 6423449 is about 185.8900282595.

The spelling of 6423449 in words is "six million, four hundred twenty-three thousand, four hundred forty-nine".