85811429 has 16 divisors (see below), whose sum is σ = 100224000. Its totient is φ = 72641520.

The previous prime is 85811417. The next prime is 85811471. The reversal of 85811429 is 92411858.

It is a cyclic number.

It is not a de Polignac number, because 85811429 - 2¹² = 85807333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85811392 and 85811401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85811489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8852 + ... + 15810.

It is an arithmetic number, because the mean of its divisors is an integer number (6264000).

Almost surely, 2^85811429 is an apocalyptic number.

It is an amenable number.

85811429 is a deficient number, since it is larger than the sum of its proper divisors (14412571).

85811429 is a wasteful number, since it uses less digits than its factorization.

85811429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7048.

The product of its digits is 23040, while the sum is 38.

The square root of 85811429 is about 9263.4458491427. The cubic root of 85811429 is about 441.0776425872.

The spelling of 85811429 in words is "eighty-five million, eight hundred eleven thousand, four hundred twenty-nine".