43400671 has 2 divisors, whose sum is σ = 43400672. Its totient is φ = 43400670.

The previous prime is 43400663. The next prime is 43400681. The reversal of 43400671 is 17600434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43400671 - 2³ = 43400663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43400681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21700335 + 21700336.

It is an arithmetic number, because the mean of its divisors is an integer number (21700336).

Almost surely, 2^43400671 is an apocalyptic number.

43400671 is a deficient number, since it is larger than the sum of its proper divisors (1).

43400671 is an equidigital number, since it uses as much as digits as its factorization.

43400671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 43400671 is about 6587.9185635525. The cubic root of 43400671 is about 351.4245909564.

The spelling of 43400671 in words is "forty-three million, four hundred thousand, six hundred seventy-one".