6449923 has 2 divisors, whose sum is σ = 6449924. Its totient is φ = 6449922.

The previous prime is 6449921. The next prime is 6450007. The reversal of 6449923 is 3299446.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6449923 - 2¹ = 6449921 is a prime.

Together with 6449921, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 6 + 4² + 4⁸ + 9⁴ + 9⁷ + 2⁹ + 3¹³ .

6449923 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6449921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3224961 + 3224962.

It is an arithmetic number, because the mean of its divisors is an integer number (3224962).

Almost surely, 2^6449923 is an apocalyptic number.

6449923 is a deficient number, since it is larger than the sum of its proper divisors (1).

6449923 is an equidigital number, since it uses as much as digits as its factorization.

6449923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 37.

The square root of 6449923 is about 2539.6698604346. The cubic root of 6449923 is about 186.1450577682.

The spelling of 6449923 in words is "six million, four hundred forty-nine thousand, nine hundred twenty-three".