85429837 has 4 divisors (see below), whose sum is σ = 85683676. Its totient is φ = 85176000.

The previous prime is 85429819. The next prime is 85429849. The reversal of 85429837 is 73892458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73892458 = 2 ⋅36946229.

It can be written as a sum of positive squares in 2 ways, for example, as 57244356 + 28185481 = 7566^2 + 5309^2 .

It is a cyclic number.

It is not a de Polignac number, because 85429837 - 2¹¹ = 85427789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85429807) 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, 126414 + ... + 127087.

It is an arithmetic number, because the mean of its divisors is an integer number (21420919).

Almost surely, 2^85429837 is an apocalyptic number.

It is an amenable number.

85429837 is a deficient number, since it is larger than the sum of its proper divisors (253839).

85429837 is a wasteful number, since it uses less digits than its factorization.

85429837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253838.

The product of its digits is 483840, while the sum is 46.

The square root of 85429837 is about 9242.8262452564. The cubic root of 85429837 is about 440.4228665412.

The spelling of 85429837 in words is "eighty-five million, four hundred twenty-nine thousand, eight hundred thirty-seven".