16674429 has 4 divisors (see below), whose sum is σ = 22232576. Its totient is φ = 11116284.

The previous prime is 16674389. The next prime is 16674431. The reversal of 16674429 is 92447661.

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 not a de Polignac number, because 16674429 - 2¹² = 16670333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16674529) 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, 2779069 + ... + 2779074.

It is an arithmetic number, because the mean of its divisors is an integer number (5558144).

Almost surely, 2^16674429 is an apocalyptic number.

It is an amenable number.

16674429 is a deficient number, since it is larger than the sum of its proper divisors (5558147).

16674429 is an equidigital number, since it uses as much as digits as its factorization.

16674429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558146.

The product of its digits is 72576, while the sum is 39.

The square root of 16674429 is about 4083.4334817651. The cubic root of 16674429 is about 255.4761269714.

The spelling of 16674429 in words is "sixteen million, six hundred seventy-four thousand, four hundred twenty-nine".