16890323 has 2 divisors, whose sum is σ = 16890324. Its totient is φ = 16890322.

The previous prime is 16890317. The next prime is 16890329. The reversal of 16890323 is 32309861.

It is a balanced prime because it is at equal distance from previous prime (16890317) and next prime (16890329).

It is a cyclic number.

It is not a de Polignac number, because 16890323 - 2¹⁴ = 16873939 is a prime.

It is a super-2 number, since 2×16890323² = 570566022088658, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16890323.

It is not a weakly prime, because it can be changed into another prime (16890329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8445161 + 8445162.

It is an arithmetic number, because the mean of its divisors is an integer number (8445162).

Almost surely, 2^16890323 is an apocalyptic number.

16890323 is a deficient number, since it is larger than the sum of its proper divisors (1).

16890323 is an equidigital number, since it uses as much as digits as its factorization.

16890323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 16890323 is about 4109.7838142657. The cubic root of 16890323 is about 256.5740039562.

The spelling of 16890323 in words is "sixteen million, eight hundred ninety thousand, three hundred twenty-three".