16128439 has 2 divisors, whose sum is σ = 16128440. Its totient is φ = 16128438.

The previous prime is 16128419. The next prime is 16128449. The reversal of 16128439 is 93482161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16128439 - 2⁵ = 16128407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16128419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8064219 + 8064220.

It is an arithmetic number, because the mean of its divisors is an integer number (8064220).

Almost surely, 2^16128439 is an apocalyptic number.

16128439 is a deficient number, since it is larger than the sum of its proper divisors (1).

16128439 is an equidigital number, since it uses as much as digits as its factorization.

16128439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 16128439 is about 4016.0227837999. The cubic root of 16128439 is about 252.6566762812.

The spelling of 16128439 in words is "sixteen million, one hundred twenty-eight thousand, four hundred thirty-nine".