439991557049 has 16 divisors (see below), whose sum is σ = 534974258880. Its totient is φ = 356649500160.

The previous prime is 439991557037. The next prime is 439991557063. The reversal of 439991557049 is 940755199934.

It is a cyclic number.

It is not a de Polignac number, because 439991557049 - 2⁸ = 439991556793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (439991557069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61914764 + ... + 61921869.

It is an arithmetic number, because the mean of its divisors is an integer number (33435891180).

Almost surely, 2^439991557049 is an apocalyptic number.

It is an amenable number.

439991557049 is a deficient number, since it is larger than the sum of its proper divisors (94982701831).

439991557049 is a wasteful number, since it uses less digits than its factorization.

439991557049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123836680.

The product of its (nonzero) digits is 55112400, while the sum is 65.

The spelling of 439991557049 in words is "four hundred thirty-nine billion, nine hundred ninety-one million, five hundred fifty-seven thousand, forty-nine".