16872047 has 2 divisors, whose sum is σ = 16872048. Its totient is φ = 16872046.

The previous prime is 16872017. The next prime is 16872049. The reversal of 16872047 is 74027861.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16872047 is a prime.

Together with 16872049, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16871998 and 16872016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16872049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8436023 + 8436024.

It is an arithmetic number, because the mean of its divisors is an integer number (8436024).

Almost surely, 2^16872047 is an apocalyptic number.

16872047 is a deficient number, since it is larger than the sum of its proper divisors (1).

16872047 is an equidigital number, since it uses as much as digits as its factorization.

16872047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 16872047 is about 4107.5597378492. The cubic root of 16872047 is about 256.4814294725.

The spelling of 16872047 in words is "sixteen million, eight hundred seventy-two thousand, forty-seven".