4446401391321 has 24 divisors (see below), whose sum is σ = 6257905431840. Its totient is φ = 2807840804544.

The previous prime is 4446401391293. The next prime is 4446401391331. The reversal of 4446401391321 is 1231931046444.

It is not a de Polignac number, because 4446401391321 - 2¹⁴ = 4446401374937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4446401391331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7156045 + ... + 7752533.

It is an arithmetic number, because the mean of its divisors is an integer number (260746059660).

Almost surely, 2^{4446401391321} is an apocalyptic number.

It is an amenable number.

4446401391321 is a deficient number, since it is larger than the sum of its proper divisors (1811504040519).

4446401391321 is a wasteful number, since it uses less digits than its factorization.

4446401391321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603413 (or 603394 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 4446401391321 in words is "four trillion, four hundred forty-six billion, four hundred one million, three hundred ninety-one thousand, three hundred twenty-one".