16398469 has 2 divisors, whose sum is σ = 16398470. Its totient is φ = 16398468.

The previous prime is 16398467. The next prime is 16398491. The reversal of 16398469 is 96489361.

16398469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16305444 + 93025 = 4038^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 16398469 - 2¹ = 16398467 is a prime.

It is a super-2 number, since 2×16398469² = 537819571087922, which contains 22 as substring.

Together with 16398467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16398467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8199234 + 8199235.

It is an arithmetic number, because the mean of its divisors is an integer number (8199235).

Almost surely, 2^16398469 is an apocalyptic number.

It is an amenable number.

16398469 is a deficient number, since it is larger than the sum of its proper divisors (1).

16398469 is an equidigital number, since it uses as much as digits as its factorization.

16398469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 46.

The square root of 16398469 is about 4049.5023151000. The cubic root of 16398469 is about 254.0589122861.

The spelling of 16398469 in words is "sixteen million, three hundred ninety-eight thousand, four hundred sixty-nine".