83940959 has 2 divisors, whose sum is σ = 83940960. Its totient is φ = 83940958.

The previous prime is 83940949. The next prime is 83941003. The reversal of 83940959 is 95904938.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83940959 - 2⁴ = 83940943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83940949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41970479 + 41970480.

It is an arithmetic number, because the mean of its divisors is an integer number (41970480).

Almost surely, 2^83940959 is an apocalyptic number.

83940959 is a deficient number, since it is larger than the sum of its proper divisors (1).

83940959 is an equidigital number, since it uses as much as digits as its factorization.

83940959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 83940959 is about 9161.9298731217. The cubic root of 83940959 is about 437.8492823246.

The spelling of 83940959 in words is "eighty-three million, nine hundred forty thousand, nine hundred fifty-nine".