1169790421 has 2 divisors, whose sum is σ = 1169790422. Its totient is φ = 1169790420.

The previous prime is 1169790407. The next prime is 1169790469. The reversal of 1169790421 is 1240979611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 769230225 + 400560196 = 27735^2 + 20014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1169790421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1169790491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584895210 + 584895211.

It is an arithmetic number, because the mean of its divisors is an integer number (584895211).

Almost surely, 2^1169790421 is an apocalyptic number.

It is an amenable number.

1169790421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1169790421 is an equidigital number, since it uses as much as digits as its factorization.

1169790421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 1169790421 is about 34202.1990667267. The cubic root of 1169790421 is about 1053.6653220898.

The spelling of 1169790421 in words is "one billion, one hundred sixty-nine million, seven hundred ninety thousand, four hundred twenty-one".