16780469 has 4 divisors (see below), whose sum is σ = 16992960. Its totient is φ = 16567980.

The previous prime is 16780459. The next prime is 16780483. The reversal of 16780469 is 96408761.

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 16780469 - 2⁴ = 16780453 is a prime.

It is a super-2 number, since 2×16780469² = 563168279719922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16780459) 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, 106127 + ... + 106284.

It is an arithmetic number, because the mean of its divisors is an integer number (4248240).

Almost surely, 2^16780469 is an apocalyptic number.

It is an amenable number.

16780469 is a deficient number, since it is larger than the sum of its proper divisors (212491).

16780469 is an equidigital number, since it uses as much as digits as its factorization.

16780469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212490.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 16780469 is about 4096.3970754799. The cubic root of 16780469 is about 256.0165445444.

The spelling of 16780469 in words is "sixteen million, seven hundred eighty thousand, four hundred sixty-nine".