108216439 has 2 divisors, whose sum is σ = 108216440. Its totient is φ = 108216438.

The previous prime is 108216413. The next prime is 108216463. The reversal of 108216439 is 934612801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 108216439 - 2⁹ = 108215927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108216539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54108219 + 54108220.

It is an arithmetic number, because the mean of its divisors is an integer number (54108220).

Almost surely, 2^108216439 is an apocalyptic number.

108216439 is a deficient number, since it is larger than the sum of its proper divisors (1).

108216439 is an equidigital number, since it uses as much as digits as its factorization.

108216439 is an evil number, because the sum of its binary digits is even.

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

The square root of 108216439 is about 10402.7130595821. The cubic root of 108216439 is about 476.5382287716.

The spelling of 108216439 in words is "one hundred eight million, two hundred sixteen thousand, four hundred thirty-nine".