394448243980 has 24 divisors (see below), whose sum is σ = 946675785888. Its totient is φ = 135239397888.

The previous prime is 394448243921. The next prime is 394448243983. The reversal of 394448243980 is 89342844493.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (394448243983) 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, 1408743589 + ... + 1408743868.

It is an arithmetic number, because the mean of its divisors is an integer number (39444824412).

Almost surely, 2^394448243980 is an apocalyptic number.

It is an amenable number.

394448243980 is an abundant number, since it is smaller than the sum of its proper divisors (552227541908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394448243980 is a wasteful number, since it uses less digits than its factorization.

394448243980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2817487473 (or 2817487471 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 58.

The spelling of 394448243980 in words is "three hundred ninety-four billion, four hundred forty-eight million, two hundred forty-three thousand, nine hundred eighty".