13784669 has 4 divisors (see below), whose sum is σ = 13839840. Its totient is φ = 13729500.

The previous prime is 13784653. The next prime is 13784689. The reversal of 13784669 is 96648731.

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 13784669 - 2⁴ = 13784653 is a prime.

It is a super-2 number, since 2×13784669² = 380034198879122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13784629) 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 3 ways as a sum of consecutive naturals, for example, 27209 + ... + 27710.

It is an arithmetic number, because the mean of its divisors is an integer number (3459960).

Almost surely, 2^13784669 is an apocalyptic number.

It is an amenable number.

13784669 is a deficient number, since it is larger than the sum of its proper divisors (55171).

13784669 is an equidigital number, since it uses as much as digits as its factorization.

13784669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55170.

The product of its digits is 217728, while the sum is 44.

The square root of 13784669 is about 3712.7710675451. The cubic root of 13784669 is about 239.7721738449.

The spelling of 13784669 in words is "thirteen million, seven hundred eighty-four thousand, six hundred sixty-nine".