12945437 has 2 divisors, whose sum is σ = 12945438. Its totient is φ = 12945436.

The previous prime is 12945419. The next prime is 12945467. The reversal of 12945437 is 73454921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12880921 + 64516 = 3589^2 + 254^2 .

It is an emirp because it is prime and its reverse (73454921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12945437 - 2²⁰ = 11896861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12945397 and 12945406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12945467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6472718 + 6472719.

It is an arithmetic number, because the mean of its divisors is an integer number (6472719).

Almost surely, 2^12945437 is an apocalyptic number.

It is an amenable number.

12945437 is a deficient number, since it is larger than the sum of its proper divisors (1).

12945437 is an equidigital number, since it uses as much as digits as its factorization.

12945437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 12945437 is about 3597.9767925877. The cubic root of 12945437 is about 234.8040436778.

The spelling of 12945437 in words is "twelve million, nine hundred forty-five thousand, four hundred thirty-seven".