1129408429 has 8 divisors (see below), whose sum is σ = 1151544600. Its totient is φ = 1107302976.

The previous prime is 1129408367. The next prime is 1129408457. The reversal of 1129408429 is 9248049211.

It can be written as a sum of positive squares in 4 ways, for example, as 20385225 + 1109023204 = 4515^2 + 33302^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1129408429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1129408391 and 1129408400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129408129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75219 + ... + 88975.

It is an arithmetic number, because the mean of its divisors is an integer number (143943075).

Almost surely, 2^1129408429 is an apocalyptic number.

It is an amenable number.

1129408429 is a deficient number, since it is larger than the sum of its proper divisors (22136171).

1129408429 is a wasteful number, since it uses less digits than its factorization.

1129408429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15359.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 1129408429 is about 33606.6723880839. The cubic root of 1129408429 is about 1041.3986448769.

The spelling of 1129408429 in words is "one billion, one hundred twenty-nine million, four hundred eight thousand, four hundred twenty-nine".