140446009 has 8 divisors (see below), whose sum is σ = 154794528. Its totient is φ = 126360960.

The previous prime is 140445983. The next prime is 140446013. The reversal of 140446009 is 900644041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140446009 - 2¹⁹ = 139921721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140446039) 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 7 ways as a sum of consecutive naturals, for example, 64747 + ... + 66880.

It is an arithmetic number, because the mean of its divisors is an integer number (19349316).

Almost surely, 2^140446009 is an apocalyptic number.

It is an amenable number.

140446009 is a deficient number, since it is larger than the sum of its proper divisors (14348519).

140446009 is a wasteful number, since it uses less digits than its factorization.

140446009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131735.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 140446009 is about 11850.9918994150. The cubic root of 140446009 is about 519.8002302164.

The spelling of 140446009 in words is "one hundred forty million, four hundred forty-six thousand, nine".