43748473 has 2 divisors, whose sum is σ = 43748474. Its totient is φ = 43748472.

The previous prime is 43748449. The next prime is 43748477. The reversal of 43748473 is 37484734.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43718544 + 29929 = 6612^2 + 173^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43748473 is a prime.

It is not a weakly prime, because it can be changed into another prime (43748477) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21874236 + 21874237.

It is an arithmetic number, because the mean of its divisors is an integer number (21874237).

Almost surely, 2^43748473 is an apocalyptic number.

It is an amenable number.

43748473 is a deficient number, since it is larger than the sum of its proper divisors (1).

43748473 is an equidigital number, since it uses as much as digits as its factorization.

43748473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 40.

The square root of 43748473 is about 6614.2628463042. The cubic root of 43748473 is about 352.3608370412.

The spelling of 43748473 in words is "forty-three million, seven hundred forty-eight thousand, four hundred seventy-three".