159404969 has 2 divisors, whose sum is σ = 159404970. Its totient is φ = 159404968.

The previous prime is 159404957. The next prime is 159404981. The reversal of 159404969 is 969404951.

It is a balanced prime because it is at equal distance from previous prime (159404957) and next prime (159404981).

It can be written as a sum of positive squares in only one way, i.e., 149132944 + 10272025 = 12212^2 + 3205^2 .

It is a cyclic number.

It is not a de Polignac number, because 159404969 - 2²⁴ = 142627753 is a prime.

It is a super-2 number, since 2×159404969² = 50819888283781922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (159404929) 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, 79702484 + 79702485.

It is an arithmetic number, because the mean of its divisors is an integer number (79702485).

Almost surely, 2^159404969 is an apocalyptic number.

It is an amenable number.

159404969 is a deficient number, since it is larger than the sum of its proper divisors (1).

159404969 is an equidigital number, since it uses as much as digits as its factorization.

159404969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 159404969 is about 12625.5680664277. The cubic root of 159404969 is about 542.2097028986.

The spelling of 159404969 in words is "one hundred fifty-nine million, four hundred four thousand, nine hundred sixty-nine".