16969971 has 8 divisors (see below), whose sum is σ = 22846720. Its totient is φ = 11203272.

The previous prime is 16969963. The next prime is 16969991. The reversal of 16969971 is 17996961.

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

It is not a de Polignac number, because 16969971 - 2³ = 16969963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16969971.

It is not an unprimeable number, because it can be changed into a prime (16969951) 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, 27151 + ... + 27768.

It is an arithmetic number, because the mean of its divisors is an integer number (2855840).

Almost surely, 2^16969971 is an apocalyptic number.

16969971 is a deficient number, since it is larger than the sum of its proper divisors (5876749).

16969971 is a wasteful number, since it uses less digits than its factorization.

16969971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55025.

The product of its digits is 183708, while the sum is 48.

The square root of 16969971 is about 4119.4624649340. The cubic root of 16969971 is about 256.9766717661.

The spelling of 16969971 in words is "sixteen million, nine hundred sixty-nine thousand, nine hundred seventy-one".