1129849 has 4 divisors (see below), whose sum is σ = 1291264. Its totient is φ = 968436.

The previous prime is 1129847. The next prime is 1129853. The reversal of 1129849 is 9489211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9489211 = 257 ⋅36923.

It is not a de Polignac number, because 1129849 - 2¹ = 1129847 is a prime.

It is an Ulam number.

It is a Duffinian number.

1129849 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1129841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80697 + ... + 80710.

It is an arithmetic number, because the mean of its divisors is an integer number (322816).

2^1129849 is an apocalyptic number.

It is an amenable number.

1129849 is a deficient number, since it is larger than the sum of its proper divisors (161415).

1129849 is an equidigital number, since it uses as much as digits as its factorization.

1129849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161414.

The product of its digits is 5184, while the sum is 34.

The square root of 1129849 is about 1062.9435544750. The cubic root of 1129849 is about 104.1534040359.

The spelling of 1129849 in words is "one million, one hundred twenty-nine thousand, eight hundred forty-nine".