16004047 has 2 divisors, whose sum is σ = 16004048. Its totient is φ = 16004046.

The previous prime is 16003997. The next prime is 16004059. The reversal of 16004047 is 74040061.

It is a strong prime.

It is an emirp because it is prime and its reverse (74040061) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16004047 is a prime.

It is a super-2 number, since 2×16004047² = 512259040756418, which contains 22 as substring.

It is a Chen prime.

It is equal to p_1031359 and since 16004047 and 1031359 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16004147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8002023 + 8002024.

It is an arithmetic number, because the mean of its divisors is an integer number (8002024).

Almost surely, 2^16004047 is an apocalyptic number.

16004047 is a deficient number, since it is larger than the sum of its proper divisors (1).

16004047 is an equidigital number, since it uses as much as digits as its factorization.

16004047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 16004047 is about 4000.5058430154. The cubic root of 16004047 is about 252.0054536067.

The spelling of 16004047 in words is "sixteen million, four thousand, forty-seven".