109391990369 has 2 divisors, whose sum is σ = 109391990370. Its totient is φ = 109391990368.

The previous prime is 109391990359. The next prime is 109391990399. The reversal of 109391990369 is 963099193901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83052323344 + 26339667025 = 288188^2 + 162295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109391990369 is a prime.

It is a super-2 number, since 2×109391990369² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (109391990359) 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, 54695995184 + 54695995185.

It is an arithmetic number, because the mean of its divisors is an integer number (54695995185).

Almost surely, 2^109391990369 is an apocalyptic number.

It is an amenable number.

109391990369 is a deficient number, since it is larger than the sum of its proper divisors (1).

109391990369 is an equidigital number, since it uses as much as digits as its factorization.

109391990369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3188646, while the sum is 59.

The spelling of 109391990369 in words is "one hundred nine billion, three hundred ninety-one million, nine hundred ninety thousand, three hundred sixty-nine".