140591807 has 4 divisors (see below), whose sum is σ = 141956880. Its totient is φ = 139226736.

The previous prime is 140591779. The next prime is 140591821. The reversal of 140591807 is 708195041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140591807 - 2¹⁰ = 140590783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140591837) 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 3 ways as a sum of consecutive naturals, for example, 682382 + ... + 682587.

It is an arithmetic number, because the mean of its divisors is an integer number (35489220).

Almost surely, 2^140591807 is an apocalyptic number.

140591807 is a deficient number, since it is larger than the sum of its proper divisors (1365073).

140591807 is a wasteful number, since it uses less digits than its factorization.

140591807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365072.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 140591807 is about 11857.1416032702. The cubic root of 140591807 is about 519.9800374486.

The spelling of 140591807 in words is "one hundred forty million, five hundred ninety-one thousand, eight hundred seven".