16669459 has 2 divisors, whose sum is σ = 16669460. Its totient is φ = 16669458.

The previous prime is 16669453. The next prime is 16669463. The reversal of 16669459 is 95496661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16669459 - 2⁵ = 16669427 is a prime.

It is not a weakly prime, because it can be changed into another prime (16669453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8334729 + 8334730.

It is an arithmetic number, because the mean of its divisors is an integer number (8334730).

Almost surely, 2^16669459 is an apocalyptic number.

16669459 is a deficient number, since it is larger than the sum of its proper divisors (1).

16669459 is an equidigital number, since it uses as much as digits as its factorization.

16669459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The square root of 16669459 is about 4082.8248799085. The cubic root of 16669459 is about 255.4507419437.

It can be divided in two parts, 166694 and 59, that added together give a triangular number (166753 = T₅₇₇).

The spelling of 16669459 in words is "sixteen million, six hundred sixty-nine thousand, four hundred fifty-nine".