39990446440001 has 8 divisors (see below), whose sum is σ = 42347968852104. Its totient is φ = 37633495495680.

The previous prime is 39990446439989. The next prime is 39990446440027. The reversal of 39990446440001 is 10004464409993.

It is a Cunningham number, because it is equal to 6323800²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 7752749709376 + 32237696730625 = 2784376^2 + 5677825^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 39990446440001 - 2¹⁰ = 39990446438977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39990446440201) 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, 142722860 + ... + 143002781.

It is an arithmetic number, because the mean of its divisors is an integer number (5293496106513).

Almost surely, 2^{39990446440001} is an apocalyptic number.

It is an amenable number.

39990446440001 is a deficient number, since it is larger than the sum of its proper divisors (2357522412103).

39990446440001 is a wasteful number, since it uses less digits than its factorization.

39990446440001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285733891.

The product of its (nonzero) digits is 3359232, while the sum is 53.

The spelling of 39990446440001 in words is "thirty-nine trillion, nine hundred ninety billion, four hundred forty-six million, four hundred forty thousand, one".