16253239 has 2 divisors, whose sum is σ = 16253240. Its totient is φ = 16253238.

The previous prime is 16253233. The next prime is 16253243. The reversal of 16253239 is 93235261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16253239 - 2⁹ = 16252727 is a prime.

It is a super-2 number, since 2×16253239² = 528335555982242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16253239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16253233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8126619 + 8126620.

It is an arithmetic number, because the mean of its divisors is an integer number (8126620).

Almost surely, 2^16253239 is an apocalyptic number.

16253239 is a deficient number, since it is larger than the sum of its proper divisors (1).

16253239 is an equidigital number, since it uses as much as digits as its factorization.

16253239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 31.

The square root of 16253239 is about 4031.5306026372. The cubic root of 16253239 is about 253.3066786745.

The spelling of 16253239 in words is "sixteen million, two hundred fifty-three thousand, two hundred thirty-nine".