1129890929 has 2 divisors, whose sum is σ = 1129890930. Its totient is φ = 1129890928.

The previous prime is 1129890899. The next prime is 1129890959. The reversal of 1129890929 is 9290989211.

It is a balanced prime because it is at equal distance from previous prime (1129890899) and next prime (1129890959).

It can be written as a sum of positive squares in only one way, i.e., 1118768704 + 11122225 = 33448^2 + 3335^2 .

It is a cyclic number.

It is not a de Polignac number, because 1129890929 - 2¹² = 1129886833 is a prime.

It is a super-2 number, since 2×1129890929² = 2553307022872966082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1129890959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564945464 + 564945465.

It is an arithmetic number, because the mean of its divisors is an integer number (564945465).

Almost surely, 2^1129890929 is an apocalyptic number.

It is an amenable number.

1129890929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129890929 is an equidigital number, since it uses as much as digits as its factorization.

1129890929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 50.

The square root of 1129890929 is about 33613.8502555122. The cubic root of 1129890929 is about 1041.5469240690.

The spelling of 1129890929 in words is "one billion, one hundred twenty-nine million, eight hundred ninety thousand, nine hundred twenty-nine".