1158949 has 4 divisors (see below), whose sum is σ = 1264320. Its totient is φ = 1053580.

The previous prime is 1158923. The next prime is 1158953. The reversal of 1158949 is 9498511.

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.

It is not a de Polignac number, because 1158949 - 2⁷ = 1158821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1150949) 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 3 ways as a sum of consecutive naturals, for example, 52669 + ... + 52690.

It is an arithmetic number, because the mean of its divisors is an integer number (316080).

2^1158949 is an apocalyptic number.

It is an amenable number.

1158949 is a deficient number, since it is larger than the sum of its proper divisors (105371).

1158949 is a wasteful number, since it uses less digits than its factorization.

1158949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105370.

The product of its digits is 12960, while the sum is 37.

The square root of 1158949 is about 1076.5449363589. The cubic root of 1158949 is about 105.0400149829.

The spelling of 1158949 in words is "one million, one hundred fifty-eight thousand, nine hundred forty-nine".