16448947 has 2 divisors, whose sum is σ = 16448948. Its totient is φ = 16448946.

The previous prime is 16448923. The next prime is 16448959. The reversal of 16448947 is 74984461.

It is a strong prime.

It is an emirp because it is prime and its reverse (74984461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16448947 - 2¹⁹ = 15924659 is a prime.

It is not a weakly prime, because it can be changed into another prime (16448917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8224473 + 8224474.

It is an arithmetic number, because the mean of its divisors is an integer number (8224474).

Almost surely, 2^16448947 is an apocalyptic number.

16448947 is a deficient number, since it is larger than the sum of its proper divisors (1).

16448947 is an equidigital number, since it uses as much as digits as its factorization.

16448947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 16448947 is about 4055.7301438828. The cubic root of 16448947 is about 254.3193278468.

The spelling of 16448947 in words is "sixteen million, four hundred forty-eight thousand, nine hundred forty-seven".