169121411 has 2 divisors, whose sum is σ = 169121412. Its totient is φ = 169121410.

The previous prime is 169121371. The next prime is 169121429. The reversal of 169121411 is 114121961.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-169121411 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (169121441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84560705 + 84560706.

It is an arithmetic number, because the mean of its divisors is an integer number (84560706).

Almost surely, 2^169121411 is an apocalyptic number.

169121411 is a deficient number, since it is larger than the sum of its proper divisors (1).

169121411 is an equidigital number, since it uses as much as digits as its factorization.

169121411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 26.

The square root of 169121411 is about 13004.6688154678. The cubic root of 169121411 is about 553.0098469297.

The spelling of 169121411 in words is "one hundred sixty-nine million, one hundred twenty-one thousand, four hundred eleven".