16622839 has 2 divisors, whose sum is σ = 16622840. Its totient is φ = 16622838.

The previous prime is 16622831. The next prime is 16622843. The reversal of 16622839 is 93822661.

It is a strong prime.

It is an emirp because it is prime and its reverse (93822661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16622839 - 2³ = 16622831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16622798 and 16622807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16622831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8311419 + 8311420.

It is an arithmetic number, because the mean of its divisors is an integer number (8311420).

Almost surely, 2^16622839 is an apocalyptic number.

16622839 is a deficient number, since it is larger than the sum of its proper divisors (1).

16622839 is an equidigital number, since it uses as much as digits as its factorization.

16622839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 16622839 is about 4077.1116001405. Note that the first 3 decimals coincide. The cubic root of 16622839 is about 255.2123772180.

It can be divided in two parts, 166 and 22839, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 16622839 in words is "sixteen million, six hundred twenty-two thousand, eight hundred thirty-nine".