109517449 has 2 divisors, whose sum is σ = 109517450. Its totient is φ = 109517448.

The previous prime is 109517399. The next prime is 109517483. The reversal of 109517449 is 944715901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107267449 + 2250000 = 10357^2 + 1500^2 .

It is an emirp because it is prime and its reverse (944715901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109517449 is a prime.

It is not a weakly prime, because it can be changed into another prime (109517549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54758724 + 54758725.

It is an arithmetic number, because the mean of its divisors is an integer number (54758725).

Almost surely, 2^109517449 is an apocalyptic number.

It is an amenable number.

109517449 is a deficient number, since it is larger than the sum of its proper divisors (1).

109517449 is an equidigital number, since it uses as much as digits as its factorization.

109517449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 109517449 is about 10465.0584804864. The cubic root of 109517449 is about 478.4403209664.

The spelling of 109517449 in words is "one hundred nine million, five hundred seventeen thousand, four hundred forty-nine".