16972449 has 8 divisors (see below), whose sum is σ = 24370752. Its totient is φ = 10444560.

The previous prime is 16972429. The next prime is 16972463. The reversal of 16972449 is 94427961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16972449 - 2¹³ = 16964257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16972449.

It is not an unprimeable number, because it can be changed into a prime (16972429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217557 + ... + 217634.

It is an arithmetic number, because the mean of its divisors is an integer number (3046344).

Almost surely, 2^16972449 is an apocalyptic number.

It is an amenable number.

16972449 is a deficient number, since it is larger than the sum of its proper divisors (7398303).

16972449 is a wasteful number, since it uses less digits than its factorization.

16972449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435207.

The product of its digits is 108864, while the sum is 42.

The square root of 16972449 is about 4119.7632213514. The cubic root of 16972449 is about 256.9891792948.

The spelling of 16972449 in words is "sixteen million, nine hundred seventy-two thousand, four hundred forty-nine".