85353729 has 4 divisors (see below), whose sum is σ = 113804976. Its totient is φ = 56902484.

The previous prime is 85353703. The next prime is 85353769. The reversal of 85353729 is 92735358.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85353729 - 2⁷ = 85353601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85353769) 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, 14225619 + ... + 14225624.

It is an arithmetic number, because the mean of its divisors is an integer number (28451244).

Almost surely, 2^85353729 is an apocalyptic number.

It is an amenable number.

85353729 is a deficient number, since it is larger than the sum of its proper divisors (28451247).

85353729 is a wasteful number, since it uses less digits than its factorization.

85353729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28451246.

The product of its digits is 226800, while the sum is 42.

The square root of 85353729 is about 9238.7081889191. The cubic root of 85353729 is about 440.2920392499.

The spelling of 85353729 in words is "eighty-five million, three hundred fifty-three thousand, seven hundred twenty-nine".