140020449 has 16 divisors (see below), whose sum is σ = 200465280. Its totient is φ = 86616320.

The previous prime is 140020429. The next prime is 140020451. The reversal of 140020449 is 944020041.

It is a cyclic number.

It is not a de Polignac number, because 140020449 - 2⁵ = 140020417 is a prime.

It is a super-2 number, since 2×140020449² = 39211452276323202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140020429) 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 15 ways as a sum of consecutive naturals, for example, 15714 + ... + 22955.

It is an arithmetic number, because the mean of its divisors is an integer number (12529080).

Almost surely, 2^140020449 is an apocalyptic number.

It is an amenable number.

140020449 is a deficient number, since it is larger than the sum of its proper divisors (60444831).

140020449 is a wasteful number, since it uses less digits than its factorization.

140020449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38760.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 140020449 is about 11833.0236626147. The cubic root of 140020449 is about 519.2746902190.

The spelling of 140020449 in words is "one hundred forty million, twenty thousand, four hundred forty-nine".