109749071 has 2 divisors, whose sum is σ = 109749072. Its totient is φ = 109749070.

The previous prime is 109749043. The next prime is 109749109. The reversal of 109749071 is 170947901.

It is an a-pointer prime, because the next prime (109749109) can be obtained adding 109749071 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109749071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109749271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54874535 + 54874536.

It is an arithmetic number, because the mean of its divisors is an integer number (54874536).

Almost surely, 2^109749071 is an apocalyptic number.

109749071 is a deficient number, since it is larger than the sum of its proper divisors (1).

109749071 is an equidigital number, since it uses as much as digits as its factorization.

109749071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 109749071 is about 10476.1190810338. The cubic root of 109749071 is about 478.7773731074. Note that the first 3 decimals are identical.

The spelling of 109749071 in words is "one hundred nine million, seven hundred forty-nine thousand, seventy-one".