1129724459 has 2 divisors, whose sum is σ = 1129724460. Its totient is φ = 1129724458.

The previous prime is 1129724369. The next prime is 1129724461. The reversal of 1129724459 is 9544279211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1129724459 - 2¹⁶ = 1129658923 is a prime.

Together with 1129724461, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1129721459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564862229 + 564862230.

It is an arithmetic number, because the mean of its divisors is an integer number (564862230).

Almost surely, 2^1129724459 is an apocalyptic number.

1129724459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129724459 is an equidigital number, since it uses as much as digits as its factorization.

1129724459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 1129724459 is about 33611.3739528749. The cubic root of 1129724459 is about 1041.4957702134.

The spelling of 1129724459 in words is "one billion, one hundred twenty-nine million, seven hundred twenty-four thousand, four hundred fifty-nine".