83902129 has 4 divisors (see below), whose sum is σ = 83940084. Its totient is φ = 83864176.

The previous prime is 83902111. The next prime is 83902139. The reversal of 83902129 is 92120938.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12110400 + 71791729 = 3480^2 + 8473^2 .

It is a cyclic number.

It is not a de Polignac number, because 83902129 - 2¹¹ = 83900081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83902094 and 83902103.

It is not an unprimeable number, because it can be changed into a prime (83902109) 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 in 3 ways as a sum of consecutive naturals, for example, 15442 + ... + 20155.

It is an arithmetic number, because the mean of its divisors is an integer number (20985021).

Almost surely, 2^83902129 is an apocalyptic number.

It is an amenable number.

83902129 is a deficient number, since it is larger than the sum of its proper divisors (37955).

83902129 is a wasteful number, since it uses less digits than its factorization.

83902129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37954.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 83902129 is about 9159.8105329750. The cubic root of 83902129 is about 437.7817574432.

The spelling of 83902129 in words is "eighty-three million, nine hundred two thousand, one hundred twenty-nine".