1129099000 has 64 divisors (see below), whose sum is σ = 2706631200. Its totient is φ = 440608000.

The previous prime is 1129098991. The next prime is 1129099033. The reversal of 1129099000 is 9909211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27231 + ... + 54769.

Almost surely, 2^1129099000 is an apocalyptic number.

1129099000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1129099000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1353315600).

1129099000 is an abundant number, since it is smaller than the sum of its proper divisors (1577532200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1129099000 is a wasteful number, since it uses less digits than its factorization.

1129099000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27601 (or 27587 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 1129099000 is about 33602.0683887168. The cubic root of 1129099000 is about 1041.3035306661.

The spelling of 1129099000 in words is "one billion, one hundred twenty-nine million, ninety-nine thousand".