65943929 has 2 divisors, whose sum is σ = 65943930. Its totient is φ = 65943928.

The previous prime is 65943923. The next prime is 65943931. The reversal of 65943929 is 92934956.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45873529 + 20070400 = 6773^2 + 4480^2 .

It is a cyclic number.

It is not a de Polignac number, because 65943929 - 2⁸ = 65943673 is a prime.

Together with 65943931, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65943923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32971964 + 32971965.

It is an arithmetic number, because the mean of its divisors is an integer number (32971965).

Almost surely, 2^65943929 is an apocalyptic number.

It is an amenable number.

65943929 is a deficient number, since it is larger than the sum of its proper divisors (1).

65943929 is an equidigital number, since it uses as much as digits as its factorization.

65943929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 524880, while the sum is 47.

The square root of 65943929 is about 8120.5867398852. The cubic root of 65943929 is about 404.0095270276.

The spelling of 65943929 in words is "sixty-five million, nine hundred forty-three thousand, nine hundred twenty-nine".