140055993 has 128 divisors (see below), whose sum is σ = 282009600. Its totient is φ = 66528000.

The previous prime is 140055991. The next prime is 140055997. The reversal of 140055993 is 399550041.

140055993 is a `hidden beast` number, since 14 + 0 + 0 + 559 + 93 = 666.

It is not a de Polignac number, because 140055993 - 2¹ = 140055991 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140055991) 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 127 ways as a sum of consecutive naturals, for example, 1386643 + ... + 1386743.

It is an arithmetic number, because the mean of its divisors is an integer number (2203200).

Almost surely, 2^140055993 is an apocalyptic number.

It is an amenable number.

140055993 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

140055993 is a wasteful number, since it uses less digits than its factorization.

140055993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 140055993 is about 11834.5254657717. The cubic root of 140055993 is about 519.3186255589.

The spelling of 140055993 in words is "one hundred forty million, fifty-five thousand, nine hundred ninety-three".