1129629829 has 2 divisors, whose sum is σ = 1129629830. Its totient is φ = 1129629828.

The previous prime is 1129629811. The next prime is 1129629841. The reversal of 1129629829 is 9289269211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 910530625 + 219099204 = 30175^2 + 14802^2 .

It is a cyclic number.

It is not a de Polignac number, because 1129629829 - 2⁷ = 1129629701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129620829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564814914 + 564814915.

It is an arithmetic number, because the mean of its divisors is an integer number (564814915).

Almost surely, 2^1129629829 is an apocalyptic number.

It is an amenable number.

1129629829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129629829 is an equidigital number, since it uses as much as digits as its factorization.

1129629829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 49.

The square root of 1129629829 is about 33609.9662153951. The cubic root of 1129629829 is about 1041.4666895245.

The spelling of 1129629829 in words is "one billion, one hundred twenty-nine million, six hundred twenty-nine thousand, eight hundred twenty-nine".