83856929 has 8 divisors (see below), whose sum is σ = 90466152. Its totient is φ = 77270400.

The previous prime is 83856917. The next prime is 83856947. The reversal of 83856929 is 92965838.

It can be written as a sum of positive squares in 4 ways, for example, as 1537600 + 82319329 = 1240^2 + 9073^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83856929 is a prime.

It is a super-2 number, since 2×83856929² = 14063969082622082, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83856979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2447 + ... + 13179.

It is an arithmetic number, because the mean of its divisors is an integer number (11308269).

Almost surely, 2^83856929 is an apocalyptic number.

It is an amenable number.

83856929 is a deficient number, since it is larger than the sum of its proper divisors (6609223).

83856929 is a wasteful number, since it uses less digits than its factorization.

83856929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11347.

The product of its digits is 933120, while the sum is 50.

The square root of 83856929 is about 9157.3429006454. The cubic root of 83856929 is about 437.7031289662.

The spelling of 83856929 in words is "eighty-three million, eight hundred fifty-six thousand, nine hundred twenty-nine".