16707389 has 4 divisors (see below), whose sum is σ = 16855356. Its totient is φ = 16559424.

The previous prime is 16707371. The next prime is 16707391. The reversal of 16707389 is 98370761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 466489 + 16240900 = 683^2 + 4030^2 .

It is a cyclic number.

It is not a de Polignac number, because 16707389 - 2⁸ = 16707133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16707329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73814 + ... + 74039.

It is an arithmetic number, because the mean of its divisors is an integer number (4213839).

Almost surely, 2^16707389 is an apocalyptic number.

It is an amenable number.

16707389 is a deficient number, since it is larger than the sum of its proper divisors (147967).

16707389 is a wasteful number, since it uses less digits than its factorization.

16707389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147966.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 16707389 is about 4087.4673087378. The cubic root of 16707389 is about 255.6443476448.

The spelling of 16707389 in words is "sixteen million, seven hundred seven thousand, three hundred eighty-nine".