1123949 has 6 divisors (see below), whose sum is σ = 1156554. Its totient is φ = 1092240.

The previous prime is 1123943. The next prime is 1123951. The reversal of 1123949 is 9493211.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 499849 + 624100 = 707^2 + 790^2 .

It is not a de Polignac number, because 1123949 - 2⁸ = 1123693 is a prime.

It is a super-2 number, since 2×1123949² = 2526522709202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 959 + ... + 1779.

It is an arithmetic number, because the mean of its divisors is an integer number (192759).

2^1123949 is an apocalyptic number.

It is an amenable number.

1123949 is a deficient number, since it is larger than the sum of its proper divisors (32605).

1123949 is an frugal number, since it uses more digits than its factorization.

1123949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 858 counting only the distinct ones).

The product of its digits is 1944, while the sum is 29.

The square root of 1123949 is about 1060.1646098602. The cubic root of 1123949 is about 103.9717933861.

The spelling of 1123949 in words is "one million, one hundred twenty-three thousand, nine hundred forty-nine".