109779361 has 2 divisors, whose sum is σ = 109779362. Its totient is φ = 109779360.

The previous prime is 109779343. The next prime is 109779403. The reversal of 109779361 is 163977901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105698961 + 4080400 = 10281^2 + 2020^2 .

It is a cyclic number.

It is not a de Polignac number, because 109779361 - 2⁷ = 109779233 is a prime.

It is not a weakly prime, because it can be changed into another prime (109779311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54889680 + 54889681.

It is an arithmetic number, because the mean of its divisors is an integer number (54889681).

Almost surely, 2^109779361 is an apocalyptic number.

It is an amenable number.

109779361 is a deficient number, since it is larger than the sum of its proper divisors (1).

109779361 is an equidigital number, since it uses as much as digits as its factorization.

109779361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 43.

The square root of 109779361 is about 10477.5646502420. The cubic root of 109779361 is about 478.8214154928.

The spelling of 109779361 in words is "one hundred nine million, seven hundred seventy-nine thousand, three hundred sixty-one".