16398471 has 12 divisors (see below), whose sum is σ = 22858808. Its totient is φ = 10455984.

The previous prime is 16398469. The next prime is 16398491. The reversal of 16398471 is 17489361.

It is not a de Polignac number, because 16398471 - 2¹ = 16398469 is a prime.

It is a super-3 number, since 3×16398471³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16398491) 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 in 11 ways as a sum of consecutive naturals, for example, 3580 + ... + 6753.

Almost surely, 2^16398471 is an apocalyptic number.

16398471 is a deficient number, since it is larger than the sum of its proper divisors (6460337).

16398471 is a wasteful number, since it uses less digits than its factorization.

16398471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10382 (or 10359 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 16398471 is about 4049.5025620439. The cubic root of 16398471 is about 254.0589226147.

The spelling of 16398471 in words is "sixteen million, three hundred ninety-eight thousand, four hundred seventy-one".