43538797 has 4 divisors (see below), whose sum is σ = 43663900. Its totient is φ = 43413696.

The previous prime is 43538791. The next prime is 43538801. The reversal of 43538797 is 79783534.

It is a happy number.

43538797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39614436 + 3924361 = 6294^2 + 1981^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43538797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43538791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62028 + ... + 62725.

It is an arithmetic number, because the mean of its divisors is an integer number (10915975).

Almost surely, 2^43538797 is an apocalyptic number.

It is an amenable number.

43538797 is a deficient number, since it is larger than the sum of its proper divisors (125103).

43538797 is a wasteful number, since it uses less digits than its factorization.

43538797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125102.

The product of its digits is 635040, while the sum is 46.

The square root of 43538797 is about 6598.3935166069. The cubic root of 43538797 is about 351.7970081546.

The spelling of 43538797 in words is "forty-three million, five hundred thirty-eight thousand, seven hundred ninety-seven".