16009397 has 2 divisors, whose sum is σ = 16009398. Its totient is φ = 16009396.

The previous prime is 16009391. The next prime is 16009471. The reversal of 16009397 is 79390061.

16009397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11519236 + 4490161 = 3394^2 + 2119^2 .

It is a cyclic number.

It is not a de Polignac number, because 16009397 - 2⁶ = 16009333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16009391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8004698 + 8004699.

It is an arithmetic number, because the mean of its divisors is an integer number (8004699).

Almost surely, 2^16009397 is an apocalyptic number.

It is an amenable number.

16009397 is a deficient number, since it is larger than the sum of its proper divisors (1).

16009397 is an equidigital number, since it uses as much as digits as its factorization.

16009397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 16009397 is about 4001.1744525826. The cubic root of 16009397 is about 252.0335314833.

The spelling of 16009397 in words is "sixteen million, nine thousand, three hundred ninety-seven".