16449197 has 4 divisors (see below), whose sum is σ = 16534620. Its totient is φ = 16363776.

The previous prime is 16449187. The next prime is 16449211. The reversal of 16449197 is 79194461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79194461 = 59 ⋅1342279.

It can be written as a sum of positive squares in 2 ways, for example, as 6832996 + 9616201 = 2614^2 + 3101^2 .

It is a cyclic number.

It is not a de Polignac number, because 16449197 - 2¹² = 16445101 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 (16449187) 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, 42422 + ... + 42807.

It is an arithmetic number, because the mean of its divisors is an integer number (4133655).

Almost surely, 2^16449197 is an apocalyptic number.

It is an amenable number.

16449197 is a deficient number, since it is larger than the sum of its proper divisors (85423).

16449197 is an equidigital number, since it uses as much as digits as its factorization.

16449197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85422.

The product of its digits is 54432, while the sum is 41.

The square root of 16449197 is about 4055.7609643568. The cubic root of 16449197 is about 254.3206162679.

The spelling of 16449197 in words is "sixteen million, four hundred forty-nine thousand, one hundred ninety-seven".