140939293 has 4 divisors (see below), whose sum is σ = 153751968. Its totient is φ = 128126620.

The previous prime is 140939273. The next prime is 140939297. The reversal of 140939293 is 392939041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140939293 - 2⁹ = 140938781 is a prime.

It is a super-2 number, since 2×140939293² = 39727768622679698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140939297) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6406321 + ... + 6406342.

It is an arithmetic number, because the mean of its divisors is an integer number (38437992).

Almost surely, 2^140939293 is an apocalyptic number.

It is an amenable number.

140939293 is a deficient number, since it is larger than the sum of its proper divisors (12812675).

140939293 is a wasteful number, since it uses less digits than its factorization.

140939293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12812674.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 140939293 is about 11871.7855860018. The cubic root of 140939293 is about 520.4080783388.

The spelling of 140939293 in words is "one hundred forty million, nine hundred thirty-nine thousand, two hundred ninety-three".