43738481 has 2 divisors, whose sum is σ = 43738482. Its totient is φ = 43738480.

The previous prime is 43738463. The next prime is 43738511. The reversal of 43738481 is 18483734.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42706225 + 1032256 = 6535^2 + 1016^2 .

It is a cyclic number.

It is not a de Polignac number, because 43738481 - 2⁶ = 43738417 is a prime.

It is a super-2 number, since 2×43738481² = 3826109440374722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43738421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21869240 + 21869241.

It is an arithmetic number, because the mean of its divisors is an integer number (21869241).

Almost surely, 2^43738481 is an apocalyptic number.

It is an amenable number.

43738481 is a deficient number, since it is larger than the sum of its proper divisors (1).

43738481 is an equidigital number, since it uses as much as digits as its factorization.

43738481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 38.

The square root of 43738481 is about 6613.5074657855. The cubic root of 43738481 is about 352.3340089996.

The spelling of 43738481 in words is "forty-three million, seven hundred thirty-eight thousand, four hundred eighty-one".