93989140 has 72 divisors (see below), whose sum is σ = 230872320. Its totient is φ = 31484544.

The previous prime is 93989131. The next prime is 93989153. The reversal of 93989140 is 4198939.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 393141 + ... + 393379.

It is an arithmetic number, because the mean of its divisors is an integer number (3206560).

Almost surely, 2^93989140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 93989140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115436160).

93989140 is an abundant number, since it is smaller than the sum of its proper divisors (136883180).

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

93989140 is a wasteful number, since it uses less digits than its factorization.

93989140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 93989140 is about 9694.7996369188. The cubic root of 93989140 is about 454.6660835478. Note that the first 3 decimals are identical.

The spelling of 93989140 in words is "ninety-three million, nine hundred eighty-nine thousand, one hundred forty".