85440798 has 32 divisors (see below), whose sum is σ = 191251200. Its totient is φ = 28272888.

The previous prime is 85440787. The next prime is 85440799. The reversal of 85440798 is 89704458.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85440799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1815 + ... + 13197.

It is an arithmetic number, because the mean of its divisors is an integer number (5976600).

Almost surely, 2^85440798 is an apocalyptic number.

85440798 is an abundant number, since it is smaller than the sum of its proper divisors (105810402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85440798 is a wasteful number, since it uses less digits than its factorization.

85440798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11533 (or 11527 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 85440798 is about 9243.4191725789. The cubic root of 85440798 is about 440.4417017583.

The spelling of 85440798 in words is "eighty-five million, four hundred forty thousand, seven hundred ninety-eight".