109641977 has 2 divisors, whose sum is σ = 109641978. Its totient is φ = 109641976.

The previous prime is 109641971. The next prime is 109641991. The reversal of 109641977 is 779146901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101284096 + 8357881 = 10064^2 + 2891^2 .

It is a cyclic number.

It is not a de Polignac number, because 109641977 - 2¹⁸ = 109379833 is a prime.

It is not a weakly prime, because it can be changed into another prime (109641971) 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, 54820988 + 54820989.

It is an arithmetic number, because the mean of its divisors is an integer number (54820989).

Almost surely, 2^109641977 is an apocalyptic number.

It is an amenable number.

109641977 is a deficient number, since it is larger than the sum of its proper divisors (1).

109641977 is an equidigital number, since it uses as much as digits as its factorization.

109641977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 109641977 is about 10471.0064941246. The cubic root of 109641977 is about 478.6215908595.

The spelling of 109641977 in words is "one hundred nine million, six hundred forty-one thousand, nine hundred seventy-seven".