6449431 has 2 divisors, whose sum is σ = 6449432. Its totient is φ = 6449430.

The previous prime is 6449419. The next prime is 6449437. The reversal of 6449431 is 1349446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6449431 - 2²¹ = 4352279 is a prime.

It is a super-2 number, since 2×6449431² = 83190320447522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6449393 and 6449402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6449437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3224715 + 3224716.

It is an arithmetic number, because the mean of its divisors is an integer number (3224716).

Almost surely, 2^6449431 is an apocalyptic number.

6449431 is a deficient number, since it is larger than the sum of its proper divisors (1).

6449431 is an equidigital number, since it uses as much as digits as its factorization.

6449431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 6449431 is about 2539.5729956038. The cubic root of 6449431 is about 186.1403246007.

The spelling of 6449431 in words is "six million, four hundred forty-nine thousand, four hundred thirty-one".