16498969 has 2 divisors, whose sum is σ = 16498970. Its totient is φ = 16498968.

The previous prime is 16498939. The next prime is 16498997. The reversal of 16498969 is 96989461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14538969 + 1960000 = 3813^2 + 1400^2 .

It is an emirp because it is prime and its reverse (96989461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16498969 - 2⁷ = 16498841 is a prime.

It is a super-2 number, since 2×16498969² = 544431956125922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16498939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8249484 + 8249485.

It is an arithmetic number, because the mean of its divisors is an integer number (8249485).

Almost surely, 2^16498969 is an apocalyptic number.

It is an amenable number.

16498969 is a deficient number, since it is larger than the sum of its proper divisors (1).

16498969 is an equidigital number, since it uses as much as digits as its factorization.

16498969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 52.

The square root of 16498969 is about 4061.8922930083. The cubic root of 16498969 is about 254.5768658631.

The spelling of 16498969 in words is "sixteen million, four hundred ninety-eight thousand, nine hundred sixty-nine".