109931539 has 2 divisors, whose sum is σ = 109931540. Its totient is φ = 109931538.

The previous prime is 109931533. The next prime is 109931567. The reversal of 109931539 is 935139901.

It is a weak prime.

It is an emirp because it is prime and its reverse (935139901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109931539 is a prime.

It is not a weakly prime, because it can be changed into another prime (109931533) 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, 54965769 + 54965770.

It is an arithmetic number, because the mean of its divisors is an integer number (54965770).

Almost surely, 2^109931539 is an apocalyptic number.

109931539 is a deficient number, since it is larger than the sum of its proper divisors (1).

109931539 is an equidigital number, since it uses as much as digits as its factorization.

109931539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32805, while the sum is 40.

The square root of 109931539 is about 10484.8242236100. The cubic root of 109931539 is about 479.0425634427.

The spelling of 109931539 in words is "one hundred nine million, nine hundred thirty-one thousand, five hundred thirty-nine".