83591983 has 2 divisors, whose sum is σ = 83591984. Its totient is φ = 83591982.

The previous prime is 83591969. The next prime is 83591987. The reversal of 83591983 is 38919538.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83591983 - 2⁵ = 83591951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83591987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41795991 + 41795992.

It is an arithmetic number, because the mean of its divisors is an integer number (41795992).

Almost surely, 2^83591983 is an apocalyptic number.

83591983 is a deficient number, since it is larger than the sum of its proper divisors (1).

83591983 is an equidigital number, since it uses as much as digits as its factorization.

83591983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 46.

The square root of 83591983 is about 9142.8651417376. The cubic root of 83591983 is about 437.2416682269.

The spelling of 83591983 in words is "eighty-three million, five hundred ninety-one thousand, nine hundred eighty-three".