1129388 has 24 divisors (see below), whose sum is σ = 2189712. Its totient is φ = 506304.

The previous prime is 1129367. The next prime is 1129391. The reversal of 1129388 is 8839211.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1631 + ... + 2217.

It is an arithmetic number, because the mean of its divisors is an integer number (91238).

2^1129388 is an apocalyptic number.

It is an amenable number.

1129388 is a deficient number, since it is larger than the sum of its proper divisors (1060324).

1129388 is a wasteful number, since it uses less digits than its factorization.

1129388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 639 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The square root of 1129388 is about 1062.7266817014. The cubic root of 1129388 is about 104.1392365819.

The spelling of 1129388 in words is "one million, one hundred twenty-nine thousand, three hundred eighty-eight".