85540938 has 32 divisors (see below), whose sum is σ = 195832320. Its totient is φ = 24401520.

The previous prime is 85540937. The next prime is 85540951. The reversal of 85540938 is 83904558.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85540938.

It is not an unprimeable number, because it can be changed into a prime (85540937) 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, 34893 + ... + 37263.

It is an arithmetic number, because the mean of its divisors is an integer number (6119760).

Almost surely, 2^85540938 is an apocalyptic number.

85540938 is an abundant number, since it is smaller than the sum of its proper divisors (110291382).

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

85540938 is a wasteful number, since it uses less digits than its factorization.

85540938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 85540938 is about 9248.8344130490. The cubic root of 85540938 is about 440.6137062846.

The spelling of 85540938 in words is "eighty-five million, five hundred forty thousand, nine hundred thirty-eight".