82107929 has 4 divisors (see below), whose sum is σ = 83030580. Its totient is φ = 81185280.

The previous prime is 82107899. The next prime is 82107959. The reversal of 82107929 is 92970128.

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

It is an interprime number because it is at equal distance from previous prime (82107899) and next prime (82107959).

It can be written as a sum of positive squares in 2 ways, for example, as 56625625 + 25482304 = 7525^2 + 5048^2 .

It is a cyclic number.

It is not a de Polignac number, because 82107929 - 2⁸ = 82107673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82107892 and 82107901.

It is not an unprimeable number, because it can be changed into a prime (82107959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461192 + ... + 461369.

It is an arithmetic number, because the mean of its divisors is an integer number (20757645).

Almost surely, 2^82107929 is an apocalyptic number.

82107929 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

82107929 is a deficient number, since it is larger than the sum of its proper divisors (922651).

82107929 is an equidigital number, since it uses as much as digits as its factorization.

82107929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922650.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 82107929 is about 9061.3425605701. The cubic root of 82107929 is about 434.6386729554.

The spelling of 82107929 in words is "eighty-two million, one hundred seven thousand, nine hundred twenty-nine".