105719947 has 2 divisors, whose sum is σ = 105719948. Its totient is φ = 105719946.

The previous prime is 105719941. The next prime is 105719963. The reversal of 105719947 is 749917501.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105719947 is a prime.

It is a super-2 number, since 2×105719947² = 22353414387365618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105719941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52859973 + 52859974.

It is an arithmetic number, because the mean of its divisors is an integer number (52859974).

Almost surely, 2^105719947 is an apocalyptic number.

105719947 is a deficient number, since it is larger than the sum of its proper divisors (1).

105719947 is an equidigital number, since it uses as much as digits as its factorization.

105719947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 43.

The square root of 105719947 is about 10282.0205699075. The cubic root of 105719947 is about 472.8451936604.

The spelling of 105719947 in words is "one hundred five million, seven hundred nineteen thousand, nine hundred forty-seven".