1158489 has 16 divisors (see below), whose sum is σ = 1736640. Its totient is φ = 763200.

The previous prime is 1158481. The next prime is 1158491. The reversal of 1158489 is 9848511.

It is not a de Polignac number, because 1158489 - 2³ = 1158481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1158481) 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 15 ways as a sum of consecutive naturals, for example, 2689 + ... + 3089.

It is an arithmetic number, because the mean of its divisors is an integer number (108540).

2^1158489 is an apocalyptic number.

It is an amenable number.

1158489 is a deficient number, since it is larger than the sum of its proper divisors (578151).

1158489 is a wasteful number, since it uses less digits than its factorization.

1158489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 511 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 1158489 is about 1076.3312687087. The cubic root of 1158489 is about 105.0261159528.

The spelling of 1158489 in words is "one million, one hundred fifty-eight thousand, four hundred eighty-nine".