1129898 has 48 divisors (see below), whose sum is σ = 2298240. Its totient is φ = 406560.

The previous prime is 1129897. The next prime is 1129951. The reversal of 1129898 is 8989211.

It is an Ulam number.

Its product of digits (10368) is a multiple of the sum of its prime divisors (72).

It is not an unprimeable number, because it can be changed into a prime (1129897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38948 + ... + 38976.

It is an arithmetic number, because the mean of its divisors is an integer number (47880).

2^1129898 is an apocalyptic number.

1129898 is an abundant number, since it is smaller than the sum of its proper divisors (1168342).

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

1129898 is a wasteful number, since it uses less digits than its factorization.

1129898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 72 counting only the distinct ones).

The product of its digits is 10368, while the sum is 38.

The square root of 1129898 is about 1062.9666034265. The cubic root of 1129898 is about 104.1549096775.

The spelling of 1129898 in words is "one million, one hundred twenty-nine thousand, eight hundred ninety-eight".