83940757 has 2 divisors, whose sum is σ = 83940758. Its totient is φ = 83940756.

The previous prime is 83940737. The next prime is 83940763. The reversal of 83940757 is 75704938.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81884401 + 2056356 = 9049^2 + 1434^2 .

It is a cyclic number.

It is not a de Polignac number, because 83940757 - 2²³ = 75552149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83940707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41970378 + 41970379.

It is an arithmetic number, because the mean of its divisors is an integer number (41970379).

Almost surely, 2^83940757 is an apocalyptic number.

It is an amenable number.

83940757 is a deficient number, since it is larger than the sum of its proper divisors (1).

83940757 is an equidigital number, since it uses as much as digits as its factorization.

83940757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 83940757 is about 9161.9188492368. The cubic root of 83940757 is about 437.8489311030.

The spelling of 83940757 in words is "eighty-three million, nine hundred forty thousand, seven hundred fifty-seven".