109459661 has 2 divisors, whose sum is σ = 109459662. Its totient is φ = 109459660.

The previous prime is 109459657. The next prime is 109459687. The reversal of 109459661 is 166954901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104142025 + 5317636 = 10205^2 + 2306^2 .

It is a cyclic number.

It is not a de Polignac number, because 109459661 - 2² = 109459657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109459621) 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, 54729830 + 54729831.

It is an arithmetic number, because the mean of its divisors is an integer number (54729831).

Almost surely, 2^109459661 is an apocalyptic number.

It is an amenable number.

109459661 is a deficient number, since it is larger than the sum of its proper divisors (1).

109459661 is an equidigital number, since it uses as much as digits as its factorization.

109459661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 109459661 is about 10462.2971187020. The cubic root of 109459661 is about 478.3561548544.

The spelling of 109459661 in words is "one hundred nine million, four hundred fifty-nine thousand, six hundred sixty-one".