109742447 has 2 divisors, whose sum is σ = 109742448. Its totient is φ = 109742446.

The previous prime is 109742441. The next prime is 109742473. The reversal of 109742447 is 744247901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109742447 - 2⁴ = 109742431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109742447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109742441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54871223 + 54871224.

It is an arithmetic number, because the mean of its divisors is an integer number (54871224).

Almost surely, 2^109742447 is an apocalyptic number.

109742447 is a deficient number, since it is larger than the sum of its proper divisors (1).

109742447 is an equidigital number, since it uses as much as digits as its factorization.

109742447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 109742447 is about 10475.8029286542. The cubic root of 109742447 is about 478.7677405729.

The spelling of 109742447 in words is "one hundred nine million, seven hundred forty-two thousand, four hundred forty-seven".