85399400 has 24 divisors (see below), whose sum is σ = 198554070. Its totient is φ = 34159680.

The previous prime is 85399399. The next prime is 85399421. The reversal of 85399400 is 499358.

It can be written as a sum of positive squares in 3 ways, for example, as 47969476 + 37429924 = 6926^2 + 6118^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 213299 + ... + 213698.

Almost surely, 2^85399400 is an apocalyptic number.

It is an amenable number.

85399400 is an abundant number, since it is smaller than the sum of its proper divisors (113154670).

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

85399400 is a wasteful number, since it uses less digits than its factorization.

85399400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427013 (or 427004 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 85399400 is about 9241.1795783872. The cubic root of 85399400 is about 440.3705556095.

The spelling of 85399400 in words is "eighty-five million, three hundred ninety-nine thousand, four hundred".