16448431 has 2 divisors, whose sum is σ = 16448432. Its totient is φ = 16448430.

The previous prime is 16448429. The next prime is 16448437. The reversal of 16448431 is 13484461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16448431 - 2¹ = 16448429 is a prime.

It is a super-2 number, since 2×16448431² = 541101764723522, which contains 22 as substring.

Together with 16448429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 16448393 and 16448402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16448437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8224215 + 8224216.

It is an arithmetic number, because the mean of its divisors is an integer number (8224216).

Almost surely, 2^16448431 is an apocalyptic number.

16448431 is a deficient number, since it is larger than the sum of its proper divisors (1).

16448431 is an equidigital number, since it uses as much as digits as its factorization.

16448431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 31.

The square root of 16448431 is about 4055.6665296841. Note that the first 3 decimals coincide. The cubic root of 16448431 is about 254.3166685044.

The spelling of 16448431 in words is "sixteen million, four hundred forty-eight thousand, four hundred thirty-one".