16864969 has 8 divisors (see below), whose sum is σ = 19480608. Its totient is φ = 14429760.

The previous prime is 16864943. The next prime is 16864993. The reversal of 16864969 is 96946861.

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

It is a cyclic number.

It is not a de Polignac number, because 16864969 - 2⁵ = 16864937 is a prime.

It is a super-2 number, since 2×16864969² = 568854358741922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16864909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44907 + ... + 45280.

It is an arithmetic number, because the mean of its divisors is an integer number (2435076).

Almost surely, 2^16864969 is an apocalyptic number.

It is an amenable number.

16864969 is a deficient number, since it is larger than the sum of its proper divisors (2615639).

16864969 is a wasteful number, since it uses less digits than its factorization.

16864969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90215.

The product of its digits is 559872, while the sum is 49.

The square root of 16864969 is about 4106.6980653562. The cubic root of 16864969 is about 256.4455589095.

The spelling of 16864969 in words is "sixteen million, eight hundred sixty-four thousand, nine hundred sixty-nine".