109778723 has 2 divisors, whose sum is σ = 109778724. Its totient is φ = 109778722.

The previous prime is 109778693. The next prime is 109778737. The reversal of 109778723 is 327877901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109778723 - 2¹⁸ = 109516579 is a prime.

It is not a weakly prime, because it can be changed into another prime (109778783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54889361 + 54889362.

It is an arithmetic number, because the mean of its divisors is an integer number (54889362).

Almost surely, 2^109778723 is an apocalyptic number.

109778723 is a deficient number, since it is larger than the sum of its proper divisors (1).

109778723 is an equidigital number, since it uses as much as digits as its factorization.

109778723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 109778723 is about 10477.5342041914. The cubic root of 109778723 is about 478.8204879091.

The spelling of 109778723 in words is "one hundred nine million, seven hundred seventy-eight thousand, seven hundred twenty-three".