16449617 has 4 divisors (see below), whose sum is σ = 16657920. Its totient is φ = 16241316.

The previous prime is 16449599. The next prime is 16449661. The reversal of 16449617 is 71694461.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71694461 = 6983 ⋅10267.

It is a cyclic number.

It is not a de Polignac number, because 16449617 - 2¹² = 16445521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16449317) 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, 104033 + ... + 104190.

It is an arithmetic number, because the mean of its divisors is an integer number (4164480).

Almost surely, 2^16449617 is an apocalyptic number.

It is an amenable number.

16449617 is a deficient number, since it is larger than the sum of its proper divisors (208303).

16449617 is an equidigital number, since it uses as much as digits as its factorization.

16449617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208302.

The product of its digits is 36288, while the sum is 38.

The square root of 16449617 is about 4055.8127422257. The cubic root of 16449617 is about 254.3227807859.

The spelling of 16449617 in words is "sixteen million, four hundred forty-nine thousand, six hundred seventeen".