109869541 has 2 divisors, whose sum is σ = 109869542. Its totient is φ = 109869540.

The previous prime is 109869527. The next prime is 109869587. The reversal of 109869541 is 145968901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79388100 + 30481441 = 8910^2 + 5521^2 .

It is a cyclic number.

It is not a de Polignac number, because 109869541 - 2⁵ = 109869509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109869241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54934770 + 54934771.

It is an arithmetic number, because the mean of its divisors is an integer number (54934771).

Almost surely, 2^109869541 is an apocalyptic number.

It is an amenable number.

109869541 is a deficient number, since it is larger than the sum of its proper divisors (1).

109869541 is an equidigital number, since it uses as much as digits as its factorization.

109869541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 109869541 is about 10481.8672477760. The cubic root of 109869541 is about 478.9524914273.

The spelling of 109869541 in words is "one hundred nine million, eight hundred sixty-nine thousand, five hundred forty-one".