85805413 has 4 divisors (see below), whose sum is σ = 86254848. Its totient is φ = 85355980.

The previous prime is 85805389. The next prime is 85805449. The reversal of 85805413 is 31450858.

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 a de Polignac number, because none of the positive numbers 2^k-85805413 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 (85805513) 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 3 ways as a sum of consecutive naturals, for example, 224431 + ... + 224812.

It is an arithmetic number, because the mean of its divisors is an integer number (21563712).

Almost surely, 2^85805413 is an apocalyptic number.

It is an amenable number.

85805413 is a deficient number, since it is larger than the sum of its proper divisors (449435).

85805413 is a wasteful number, since it uses less digits than its factorization.

85805413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449434.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 85805413 is about 9263.1211262727. The cubic root of 85805413 is about 441.0673347718.

The spelling of 85805413 in words is "eighty-five million, eight hundred five thousand, four hundred thirteen".