109780919 has 2 divisors, whose sum is σ = 109780920. Its totient is φ = 109780918.

The previous prime is 109780901. The next prime is 109780927. The reversal of 109780919 is 919087901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109780919 - 2¹⁶ = 109715383 is a prime.

It is a super-2 number, since 2×109780919² = 24103700352969122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109780919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109780939) 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, 54890459 + 54890460.

It is an arithmetic number, because the mean of its divisors is an integer number (54890460).

Almost surely, 2^109780919 is an apocalyptic number.

109780919 is a deficient number, since it is larger than the sum of its proper divisors (1).

109780919 is an equidigital number, since it uses as much as digits as its factorization.

109780919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 44.

The square root of 109780919 is about 10477.6389993166. The cubic root of 109780919 is about 478.8236806431.

The spelling of 109780919 in words is "one hundred nine million, seven hundred eighty thousand, nine hundred nineteen".