16972839 has 18 divisors (see below), whose sum is σ = 26549640. Its totient is φ = 10443888.

The previous prime is 16972829. The next prime is 16972847. The reversal of 16972839 is 93827961.

It is not a de Polignac number, because 16972839 - 2¹¹ = 16970791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16972794 and 16972803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16972819) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4059 + ... + 7100.

It is an arithmetic number, because the mean of its divisors is an integer number (1474980).

Almost surely, 2^16972839 is an apocalyptic number.

16972839 is a deficient number, since it is larger than the sum of its proper divisors (9576801).

16972839 is a wasteful number, since it uses less digits than its factorization.

16972839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11191 (or 11175 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 16972839 is about 4119.8105538969. The cubic root of 16972839 is about 256.9911476812.

The spelling of 16972839 in words is "sixteen million, nine hundred seventy-two thousand, eight hundred thirty-nine".