140305449 has 8 divisors (see below), whose sum is σ = 187188352. Its totient is φ = 93479760.

The previous prime is 140305427. The next prime is 140305493. The reversal of 140305449 is 944503041.

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

It is not a de Polignac number, because 140305449 - 2⁹ = 140304937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140315449) 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, 8209 + ... + 18654.

It is an arithmetic number, because the mean of its divisors is an integer number (23398544).

Almost surely, 2^140305449 is an apocalyptic number.

It is an amenable number.

140305449 is a deficient number, since it is larger than the sum of its proper divisors (46882903).

140305449 is a wasteful number, since it uses less digits than its factorization.

140305449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28607.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 140305449 is about 11845.0601095984. The cubic root of 140305449 is about 519.6267649620.

The spelling of 140305449 in words is "one hundred forty million, three hundred five thousand, four hundred forty-nine".