172443983 has 2 divisors, whose sum is σ = 172443984. Its totient is φ = 172443982.

The previous prime is 172443977. The next prime is 172444001. The reversal of 172443983 is 389344271.

172443983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172443983 - 2¹⁸ = 172181839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172443983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172443913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86221991 + 86221992.

It is an arithmetic number, because the mean of its divisors is an integer number (86221992).

Almost surely, 2^172443983 is an apocalyptic number.

172443983 is a deficient number, since it is larger than the sum of its proper divisors (1).

172443983 is an equidigital number, since it uses as much as digits as its factorization.

172443983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 41.

The square root of 172443983 is about 13131.7928326638. The cubic root of 172443983 is about 556.6078774653.

The spelling of 172443983 in words is "one hundred seventy-two million, four hundred forty-three thousand, nine hundred eighty-three".