83956129 has 2 divisors, whose sum is σ = 83956130. Its totient is φ = 83956128.

The previous prime is 83956127. The next prime is 83956163. The reversal of 83956129 is 92165938.

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., 52056225 + 31899904 = 7215^2 + 5648^2 .

It is a cyclic number.

It is not a de Polignac number, because 83956129 - 2¹ = 83956127 is a prime.

Together with 83956127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (83956127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41978064 + 41978065.

It is an arithmetic number, because the mean of its divisors is an integer number (41978065).

Almost surely, 2^83956129 is an apocalyptic number.

It is an amenable number.

83956129 is a deficient number, since it is larger than the sum of its proper divisors (1).

83956129 is an equidigital number, since it uses as much as digits as its factorization.

83956129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 43.

The square root of 83956129 is about 9162.7577180672. The cubic root of 83956129 is about 437.8756571068.

The spelling of 83956129 in words is "eighty-three million, nine hundred fifty-six thousand, one hundred twenty-nine".