16669453 has 2 divisors, whose sum is σ = 16669454. Its totient is φ = 16669452.

The previous prime is 16669427. The next prime is 16669459. The reversal of 16669453 is 35496661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16621929 + 47524 = 4077^2 + 218^2 .

It is an emirp because it is prime and its reverse (35496661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16669453 - 2⁹ = 16668941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16669459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8334726 + 8334727.

It is an arithmetic number, because the mean of its divisors is an integer number (8334727).

Almost surely, 2^16669453 is an apocalyptic number.

It is an amenable number.

16669453 is a deficient number, since it is larger than the sum of its proper divisors (1).

16669453 is an equidigital number, since it uses as much as digits as its factorization.

16669453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 40.

The square root of 16669453 is about 4082.8241451231. The cubic root of 16669453 is about 255.4507112948.

The spelling of 16669453 in words is "sixteen million, six hundred sixty-nine thousand, four hundred fifty-three".