16976449 has 4 divisors (see below), whose sum is σ = 19401664. Its totient is φ = 14551236.

The previous prime is 16976441. The next prime is 16976459. The reversal of 16976449 is 94467961.

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: 94467961 = 7 ⋅13495423.

It is not a de Polignac number, because 16976449 - 2³ = 16976441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16976399 and 16976408.

It is not an unprimeable number, because it can be changed into a prime (16976441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1212597 + ... + 1212610.

It is an arithmetic number, because the mean of its divisors is an integer number (4850416).

Almost surely, 2^16976449 is an apocalyptic number.

It is an amenable number.

16976449 is a deficient number, since it is larger than the sum of its proper divisors (2425215).

16976449 is an equidigital number, since it uses as much as digits as its factorization.

16976449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2425214.

The product of its digits is 326592, while the sum is 46.

The square root of 16976449 is about 4120.2486575448. The cubic root of 16976449 is about 257.0093664419.

The spelling of 16976449 in words is "sixteen million, nine hundred seventy-six thousand, four hundred forty-nine".