16464401 has 2 divisors, whose sum is σ = 16464402. Its totient is φ = 16464400.

The previous prime is 16464367. The next prime is 16464419. The reversal of 16464401 is 10446461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9579025 + 6885376 = 3095^2 + 2624^2 .

It is an emirp because it is prime and its reverse (10446461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16464401 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16464421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8232200 + 8232201.

It is an arithmetic number, because the mean of its divisors is an integer number (8232201).

Almost surely, 2^16464401 is an apocalyptic number.

It is an amenable number.

16464401 is a deficient number, since it is larger than the sum of its proper divisors (1).

16464401 is an equidigital number, since it uses as much as digits as its factorization.

16464401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 16464401 is about 4057.6349022553. The cubic root of 16464401 is about 254.3989483577.

The spelling of 16464401 in words is "sixteen million, four hundred sixty-four thousand, four hundred one".