109911947 has 2 divisors, whose sum is σ = 109911948. Its totient is φ = 109911946.

The previous prime is 109911929. The next prime is 109912007. The reversal of 109911947 is 749119901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109911947 - 2⁶ = 109911883 is a prime.

It is not a weakly prime, because it can be changed into another prime (109911047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54955973 + 54955974.

It is an arithmetic number, because the mean of its divisors is an integer number (54955974).

Almost surely, 2^109911947 is an apocalyptic number.

109911947 is a deficient number, since it is larger than the sum of its proper divisors (1).

109911947 is an equidigital number, since it uses as much as digits as its factorization.

109911947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 41.

The square root of 109911947 is about 10483.8898792385. The cubic root of 109911947 is about 479.0141034284.

The spelling of 109911947 in words is "one hundred nine million, nine hundred eleven thousand, nine hundred forty-seven".