85440773 has 4 divisors (see below), whose sum is σ = 93208128. Its totient is φ = 77673420.

The previous prime is 85440767. The next prime is 85440779. The reversal of 85440773 is 37704458.

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 an interprime number because it is at equal distance from previous prime (85440767) and next prime (85440779).

It is not a de Polignac number, because 85440773 - 2¹⁶ = 85375237 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 (85440779) 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, 3883661 + ... + 3883682.

It is an arithmetic number, because the mean of its divisors is an integer number (23302032).

Almost surely, 2^85440773 is an apocalyptic number.

It is an amenable number.

85440773 is a deficient number, since it is larger than the sum of its proper divisors (7767355).

85440773 is a wasteful number, since it uses less digits than its factorization.

85440773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7767354.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 85440773 is about 9243.4178202654. The cubic root of 85440773 is about 440.4416588005.

The spelling of 85440773 in words is "eighty-five million, four hundred forty thousand, seven hundred seventy-three".