85538940 has 24 divisors (see below), whose sum is σ = 239509200. Its totient is φ = 22810368.

The previous prime is 85538927. The next prime is 85538941. The reversal of 85538940 is 4983558.

It is a junction number, because it is equal to n+sod(n) for n = 85538892 and 85538901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85538941) 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 7 ways as a sum of consecutive naturals, for example, 712765 + ... + 712884.

It is an arithmetic number, because the mean of its divisors is an integer number (9979550).

Almost surely, 2^85538940 is an apocalyptic number.

It is an amenable number.

85538940 is an abundant number, since it is smaller than the sum of its proper divisors (153970260).

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

85538940 is a wasteful number, since it uses less digits than its factorization.

85538940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425661 (or 1425659 counting only the distinct ones).

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

The square root of 85538940 is about 9248.7263988076. The cubic root of 85538940 is about 440.6102757516.

The spelling of 85538940 in words is "eighty-five million, five hundred thirty-eight thousand, nine hundred forty".