159409249 has 2 divisors, whose sum is σ = 159409250. Its totient is φ = 159409248.

The previous prime is 159409247. The next prime is 159409253. The reversal of 159409249 is 942904951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153933649 + 5475600 = 12407^2 + 2340^2 .

It is a cyclic number.

It is not a de Polignac number, because 159409249 - 2¹ = 159409247 is a prime.

It is a super-2 number, since 2×159409249² = 50822617333488002, which contains 22 as substring.

Together with 159409247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (159409247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79704624 + 79704625.

It is an arithmetic number, because the mean of its divisors is an integer number (79704625).

Almost surely, 2^159409249 is an apocalyptic number.

It is an amenable number.

159409249 is a deficient number, since it is larger than the sum of its proper divisors (1).

159409249 is an equidigital number, since it uses as much as digits as its factorization.

159409249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 159409249 is about 12625.7375626139. The cubic root of 159409249 is about 542.2145556055.

The spelling of 159409249 in words is "one hundred fifty-nine million, four hundred nine thousand, two hundred forty-nine".