191414929 has 2 divisors, whose sum is σ = 191414930. Its totient is φ = 191414928.

The previous prime is 191414869. The next prime is 191414953. The reversal of 191414929 is 929414191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170694225 + 20720704 = 13065^2 + 4552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191414929 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 191414891 and 191414900.

It is not a weakly prime, because it can be changed into another prime (191414969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95707464 + 95707465.

It is an arithmetic number, because the mean of its divisors is an integer number (95707465).

Almost surely, 2^191414929 is an apocalyptic number.

It is an amenable number.

191414929 is a deficient number, since it is larger than the sum of its proper divisors (1).

191414929 is an equidigital number, since it uses as much as digits as its factorization.

191414929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 40.

The square root of 191414929 is about 13835.2784214847. The cubic root of 191414929 is about 576.3132469012.

The spelling of 191414929 in words is "one hundred ninety-one million, four hundred fourteen thousand, nine hundred twenty-nine".