12117937 has 4 divisors (see below), whose sum is σ = 13050100. Its totient is φ = 11185776.

The previous prime is 12117929. The next prime is 12117943. The reversal of 12117937 is 73971121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73971121 = 7 ⋅10567303.

It can be written as a sum of positive squares in 2 ways, for example, as 1852321 + 10265616 = 1361^2 + 3204^2 .

It is a cyclic number.

It is not a de Polignac number, because 12117937 - 2³ = 12117929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12117899 and 12117908.

It is not an unprimeable number, because it can be changed into a prime (12117947) 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, 466062 + ... + 466087.

It is an arithmetic number, because the mean of its divisors is an integer number (3262525).

Almost surely, 2^12117937 is an apocalyptic number.

It is an amenable number.

12117937 is a deficient number, since it is larger than the sum of its proper divisors (932163).

12117937 is an equidigital number, since it uses as much as digits as its factorization.

12117937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932162.

The product of its digits is 2646, while the sum is 31.

The square root of 12117937 is about 3481.0827338631. The cubic root of 12117937 is about 229.6904278739.

The spelling of 12117937 in words is "twelve million, one hundred seventeen thousand, nine hundred thirty-seven".