85438773 has 32 divisors (see below), whose sum is σ = 146718720. Its totient is φ = 48126960.

The previous prime is 85438747. The next prime is 85438781. The reversal of 85438773 is 37783458.

It is not a de Polignac number, because 85438773 - 2⁵ = 85438741 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85438723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10236 + ... + 16602.

It is an arithmetic number, because the mean of its divisors is an integer number (4584960).

Almost surely, 2^85438773 is an apocalyptic number.

It is an amenable number.

85438773 is a deficient number, since it is larger than the sum of its proper divisors (61279947).

85438773 is a wasteful number, since it uses less digits than its factorization.

85438773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6454 (or 6448 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 85438773 is about 9243.3096345411. The cubic root of 85438773 is about 440.4382221502.

The spelling of 85438773 in words is "eighty-five million, four hundred thirty-eight thousand, seven hundred seventy-three".