109739173 has 2 divisors, whose sum is σ = 109739174. Its totient is φ = 109739172.

The previous prime is 109739153. The next prime is 109739177. The reversal of 109739173 is 371937901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90668484 + 19070689 = 9522^2 + 4367^2 .

It is a cyclic number.

It is not a de Polignac number, because 109739173 - 2¹³ = 109730981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109739177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54869586 + 54869587.

It is an arithmetic number, because the mean of its divisors is an integer number (54869587).

Almost surely, 2^109739173 is an apocalyptic number.

It is an amenable number.

109739173 is a deficient number, since it is larger than the sum of its proper divisors (1).

109739173 is an equidigital number, since it uses as much as digits as its factorization.

109739173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35721, while the sum is 40.

The square root of 109739173 is about 10475.6466626171. The cubic root of 109739173 is about 478.7629794216.

The spelling of 109739173 in words is "one hundred nine million, seven hundred thirty-nine thousand, one hundred seventy-three".