43340377 has 2 divisors, whose sum is σ = 43340378. Its totient is φ = 43340376.

The previous prime is 43340369. The next prime is 43340393. The reversal of 43340377 is 77304334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42302016 + 1038361 = 6504^2 + 1019^2 .

It is a cyclic number.

It is not a de Polignac number, because 43340377 - 2³ = 43340369 is a prime.

It is not a weakly prime, because it can be changed into another prime (43340347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21670188 + 21670189.

It is an arithmetic number, because the mean of its divisors is an integer number (21670189).

Almost surely, 2^43340377 is an apocalyptic number.

It is an amenable number.

43340377 is a deficient number, since it is larger than the sum of its proper divisors (1).

43340377 is an equidigital number, since it uses as much as digits as its factorization.

43340377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 31.

The square root of 43340377 is about 6583.3408691940. The cubic root of 43340377 is about 351.2617776981.

The spelling of 43340377 in words is "forty-three million, three hundred forty thousand, three hundred seventy-seven".