85820429 has 8 divisors (see below), whose sum is σ = 89774592. Its totient is φ = 81884880.

The previous prime is 85820411. The next prime is 85820443. The reversal of 85820429 is 92402858.

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

It is a cyclic number.

It is not a de Polignac number, because 85820429 - 2⁸ = 85820173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85820392 and 85820401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85880429) 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 7 ways as a sum of consecutive naturals, for example, 5252 + ... + 14114.

It is an arithmetic number, because the mean of its divisors is an integer number (11221824).

Almost surely, 2^85820429 is an apocalyptic number.

It is an amenable number.

85820429 is a deficient number, since it is larger than the sum of its proper divisors (3954163).

85820429 is a wasteful number, since it uses less digits than its factorization.

85820429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9307.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 85820429 is about 9263.9316167597. The cubic root of 85820429 is about 441.0930622893.

The spelling of 85820429 in words is "eighty-five million, eight hundred twenty thousand, four hundred twenty-nine".