16009489 has 2 divisors, whose sum is σ = 16009490. Its totient is φ = 16009488.

The previous prime is 16009471. The next prime is 16009507. The reversal of 16009489 is 98490061.

It is a balanced prime because it is at equal distance from previous prime (16009471) and next prime (16009507).

It can be written as a sum of positive squares in only one way, i.e., 14569489 + 1440000 = 3817^2 + 1200^2 .

It is a cyclic number.

It is not a de Polignac number, because 16009489 - 2¹¹ = 16007441 is a prime.

It is a super-2 number, since 2×16009489² = 512607476082242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16009589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8004744 + 8004745.

It is an arithmetic number, because the mean of its divisors is an integer number (8004745).

Almost surely, 2^16009489 is an apocalyptic number.

It is an amenable number.

16009489 is a deficient number, since it is larger than the sum of its proper divisors (1).

16009489 is an equidigital number, since it uses as much as digits as its factorization.

16009489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 16009489 is about 4001.1859491906. The cubic root of 16009489 is about 252.0340142631.

The spelling of 16009489 in words is "sixteen million, nine thousand, four hundred eighty-nine".