85429812 has 24 divisors (see below), whose sum is σ = 214670176. Its totient is φ = 26286048.

The previous prime is 85429807. The next prime is 85429819. The reversal of 85429812 is 21892458.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85429819) 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 7 ways as a sum of consecutive naturals, for example, 273658 + ... + 273969.

Almost surely, 2^85429812 is an apocalyptic number.

It is an amenable number.

85429812 is an abundant number, since it is smaller than the sum of its proper divisors (129240364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85429812 is a wasteful number, since it uses less digits than its factorization.

85429812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547647 (or 547645 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 85429812 is about 9242.8248928561. The cubic root of 85429812 is about 440.4228235797.

The spelling of 85429812 in words is "eighty-five million, four hundred twenty-nine thousand, eight hundred twelve".