16472409 has 4 divisors (see below), whose sum is σ = 21963216. Its totient is φ = 10981604.

The previous prime is 16472383. The next prime is 16472441. The reversal of 16472409 is 90427461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16472409 - 2⁸ = 16472153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16472409.

It is not an unprimeable number, because it can be changed into a prime (16472459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2745399 + ... + 2745404.

It is an arithmetic number, because the mean of its divisors is an integer number (5490804).

Almost surely, 2^16472409 is an apocalyptic number.

It is an amenable number.

16472409 is a deficient number, since it is larger than the sum of its proper divisors (5490807).

16472409 is an equidigital number, since it uses as much as digits as its factorization.

16472409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5490806.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 16472409 is about 4058.6215640289. The cubic root of 16472409 is about 254.4401867560.

The spelling of 16472409 in words is "sixteen million, four hundred seventy-two thousand, four hundred nine".