16349449 has 4 divisors (see below), whose sum is σ = 16791364. Its totient is φ = 15907536.

The previous prime is 16349441. The next prime is 16349453. The reversal of 16349449 is 94494361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14478025 + 1871424 = 3805^2 + 1368^2 .

It is a cyclic number.

It is not a de Polignac number, because 16349449 - 2³ = 16349441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16349441) 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, 220902 + ... + 220975.

It is an arithmetic number, because the mean of its divisors is an integer number (4197841).

Almost surely, 2^16349449 is an apocalyptic number.

It is an amenable number.

16349449 is a deficient number, since it is larger than the sum of its proper divisors (441915).

16349449 is an equidigital number, since it uses as much as digits as its factorization.

16349449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441914.

The product of its digits is 93312, while the sum is 40.

The square root of 16349449 is about 4043.4451894393. The cubic root of 16349449 is about 253.8055065547.

The spelling of 16349449 in words is "sixteen million, three hundred forty-nine thousand, four hundred forty-nine".