43728049 has 2 divisors, whose sum is σ = 43728050. Its totient is φ = 43728048.

The previous prime is 43728031. The next prime is 43728059. The reversal of 43728049 is 94082734.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43296400 + 431649 = 6580^2 + 657^2 .

It is a cyclic number.

It is not a de Polignac number, because 43728049 - 2⁷ = 43727921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43727999 and 43728017.

It is not a weakly prime, because it can be changed into another prime (43728059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21864024 + 21864025.

It is an arithmetic number, because the mean of its divisors is an integer number (21864025).

Almost surely, 2^43728049 is an apocalyptic number.

It is an amenable number.

43728049 is a deficient number, since it is larger than the sum of its proper divisors (1).

43728049 is an equidigital number, since it uses as much as digits as its factorization.

43728049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 43728049 is about 6612.7187298418. The cubic root of 43728049 is about 352.3059952189.

It can be divided in two parts, 4372 and 8049, that added together give a palindrome (12421).

The spelling of 43728049 in words is "forty-three million, seven hundred twenty-eight thousand, forty-nine".