109216399 has 2 divisors, whose sum is σ = 109216400. Its totient is φ = 109216398.

The previous prime is 109216339. The next prime is 109216417. The reversal of 109216399 is 993612901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109216399 - 2⁷ = 109216271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109216319) 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, 54608199 + 54608200.

It is an arithmetic number, because the mean of its divisors is an integer number (54608200).

Almost surely, 2^109216399 is an apocalyptic number.

109216399 is a deficient number, since it is larger than the sum of its proper divisors (1).

109216399 is an equidigital number, since it uses as much as digits as its factorization.

109216399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 109216399 is about 10450.6650027642. The cubic root of 109216399 is about 478.0015274544.

The spelling of 109216399 in words is "one hundred nine million, two hundred sixteen thousand, three hundred ninety-nine".