16670389 has 8 divisors (see below), whose sum is σ = 17291520. Its totient is φ = 16052400.

The previous prime is 16670371. The next prime is 16670393. The reversal of 16670389 is 98307661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16670389 - 2¹³ = 16662197 is a prime.

It is a super-2 number, since 2×16670389² = 555803738822642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16670309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17844 + ... + 18754.

It is an arithmetic number, because the mean of its divisors is an integer number (2161440).

Almost surely, 2^16670389 is an apocalyptic number.

It is an amenable number.

16670389 is a deficient number, since it is larger than the sum of its proper divisors (621131).

16670389 is an equidigital number, since it uses as much as digits as its factorization.

16670389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 16670389 is about 4082.9387700528. The cubic root of 16670389 is about 255.4554924433.

The spelling of 16670389 in words is "sixteen million, six hundred seventy thousand, three hundred eighty-nine".