140280849 has 8 divisors (see below), whose sum is σ = 207823520. Its totient is φ = 93520548.

The previous prime is 140280839. The next prime is 140280851. The reversal of 140280849 is 948082041.

It is not a de Polignac number, because 140280849 - 2²⁰ = 139232273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140280809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2597767 + ... + 2597820.

It is an arithmetic number, because the mean of its divisors is an integer number (25977940).

Almost surely, 2^140280849 is an apocalyptic number.

It is an amenable number.

140280849 is a deficient number, since it is larger than the sum of its proper divisors (67542671).

140280849 is an equidigital number, since it uses as much as digits as its factorization.

140280849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5195596 (or 5195590 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 140280849 is about 11844.0216565152. The cubic root of 140280849 is about 519.5963941634.

The spelling of 140280849 in words is "one hundred forty million, two hundred eighty thousand, eight hundred forty-nine".