16444697 has 2 divisors, whose sum is σ = 16444698. Its totient is φ = 16444696.

The previous prime is 16444693. The next prime is 16444699. The reversal of 16444697 is 79644461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12988816 + 3455881 = 3604^2 + 1859^2 .

It is a cyclic number.

It is not a de Polignac number, because 16444697 - 2² = 16444693 is a prime.

Together with 16444699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16444691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8222348 + 8222349.

It is an arithmetic number, because the mean of its divisors is an integer number (8222349).

Almost surely, 2^16444697 is an apocalyptic number.

It is an amenable number.

16444697 is a deficient number, since it is larger than the sum of its proper divisors (1).

16444697 is an equidigital number, since it uses as much as digits as its factorization.

16444697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 16444697 is about 4055.2061599874. The cubic root of 16444697 is about 254.2974226909.

The spelling of 16444697 in words is "sixteen million, four hundred forty-four thousand, six hundred ninety-seven".