16859407 has 2 divisors, whose sum is σ = 16859408. Its totient is φ = 16859406.

The previous prime is 16859387. The next prime is 16859429. The reversal of 16859407 is 70495861.

It is a weak prime.

It is an emirp because it is prime and its reverse (70495861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16859407 - 2¹⁹ = 16335119 is a prime.

It is a super-3 number, since 3×16859407³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16859407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16859477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8429703 + 8429704.

It is an arithmetic number, because the mean of its divisors is an integer number (8429704).

Almost surely, 2^16859407 is an apocalyptic number.

16859407 is a deficient number, since it is larger than the sum of its proper divisors (1).

16859407 is an equidigital number, since it uses as much as digits as its factorization.

16859407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 16859407 is about 4106.0208231328. The cubic root of 16859407 is about 256.4173642331.

The spelling of 16859407 in words is "sixteen million, eight hundred fifty-nine thousand, four hundred seven".