11823957 has 12 divisors (see below), whose sum is σ = 17156620. Its totient is φ = 7846848.

The previous prime is 11823953. The next prime is 11823971. The reversal of 11823957 is 75932811.

It can be written as a sum of positive squares in 2 ways, for example, as 4901796 + 6922161 = 2214^2 + 2631^2 .

It is not a de Polignac number, because 11823957 - 2² = 11823953 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 (11823953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 808 + ... + 4929.

Almost surely, 2^11823957 is an apocalyptic number.

It is an amenable number.

11823957 is a deficient number, since it is larger than the sum of its proper divisors (5332663).

11823957 is a wasteful number, since it uses less digits than its factorization.

11823957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5972 (or 5969 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 11823957 is about 3438.5981155116. The cubic root of 11823957 is about 227.8177791514.

The spelling of 11823957 in words is "eleven million, eight hundred twenty-three thousand, nine hundred fifty-seven".