169940091929 has 2 divisors, whose sum is σ = 169940091930. Its totient is φ = 169940091928.

The previous prime is 169940091917. The next prime is 169940091941. The reversal of 169940091929 is 929190049961.

It is a balanced prime because it is at equal distance from previous prime (169940091917) and next prime (169940091941).

It can be written as a sum of positive squares in only one way, i.e., 145102331929 + 24837760000 = 380923^2 + 157600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-169940091929 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (169940091829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84970045964 + 84970045965.

It is an arithmetic number, because the mean of its divisors is an integer number (84970045965).

Almost surely, 2^169940091929 is an apocalyptic number.

It is an amenable number.

169940091929 is a deficient number, since it is larger than the sum of its proper divisors (1).

169940091929 is an equidigital number, since it uses as much as digits as its factorization.

169940091929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2834352, while the sum is 59.

The spelling of 169940091929 in words is "one hundred sixty-nine billion, nine hundred forty million, ninety-one thousand, nine hundred twenty-nine".