83929309 has 2 divisors, whose sum is σ = 83929310. Its totient is φ = 83929308.

The previous prime is 83929303. The next prime is 83929319. The reversal of 83929309 is 90392938.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60793209 + 23136100 = 7797^2 + 4810^2 .

It is a cyclic number.

It is not a de Polignac number, because 83929309 - 2³ = 83929301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83929301) 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, 41964654 + 41964655.

It is an arithmetic number, because the mean of its divisors is an integer number (41964655).

Almost surely, 2^83929309 is an apocalyptic number.

It is an amenable number.

83929309 is a deficient number, since it is larger than the sum of its proper divisors (1).

83929309 is an equidigital number, since it uses as much as digits as its factorization.

83929309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 83929309 is about 9161.2940679797. The cubic root of 83929309 is about 437.8290253082.

The spelling of 83929309 in words is "eighty-three million, nine hundred twenty-nine thousand, three hundred nine".