43401983 has 2 divisors, whose sum is σ = 43401984. Its totient is φ = 43401982.

The previous prime is 43401979. The next prime is 43402001. The reversal of 43401983 is 38910434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43401983 - 2² = 43401979 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43401913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21700991 + 21700992.

It is an arithmetic number, because the mean of its divisors is an integer number (21700992).

Almost surely, 2^43401983 is an apocalyptic number.

43401983 is a deficient number, since it is larger than the sum of its proper divisors (1).

43401983 is an equidigital number, since it uses as much as digits as its factorization.

43401983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 43401983 is about 6588.0181390157. The cubic root of 43401983 is about 351.4281321030.

The spelling of 43401983 in words is "forty-three million, four hundred one thousand, nine hundred eighty-three".