43380641 has 2 divisors, whose sum is σ = 43380642. Its totient is φ = 43380640.

The previous prime is 43380551. The next prime is 43380643. The reversal of 43380641 is 14608334.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33640000 + 9740641 = 5800^2 + 3121^2 .

It is a cyclic number.

It is not a de Polignac number, because 43380641 - 2¹⁰ = 43379617 is a prime.

Together with 43380643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43380643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21690320 + 21690321.

It is an arithmetic number, because the mean of its divisors is an integer number (21690321).

Almost surely, 2^43380641 is an apocalyptic number.

It is an amenable number.

43380641 is a deficient number, since it is larger than the sum of its proper divisors (1).

43380641 is an equidigital number, since it uses as much as digits as its factorization.

43380641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 43380641 is about 6586.3981811002. The cubic root of 43380641 is about 351.3705202279.

Adding to 43380641 its reverse (14608334), we get a palindrome (57988975).

The spelling of 43380641 in words is "forty-three million, three hundred eighty thousand, six hundred forty-one".