387427995440 has 20 divisors (see below), whose sum is σ = 900770089584. Its totient is φ = 154971198144.

The previous prime is 387427995379. The next prime is 387427995443. The reversal of 387427995440 is 44599724783.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (62) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (387427995443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2421424892 + ... + 2421425051.

Almost surely, 2^387427995440 is an apocalyptic number.

It is an amenable number.

387427995440 is an abundant number, since it is smaller than the sum of its proper divisors (513342094144).

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

387427995440 is a wasteful number, since it uses less digits than its factorization.

387427995440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4842849956 (or 4842849950 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 62.

The spelling of 387427995440 in words is "three hundred eighty-seven billion, four hundred twenty-seven million, nine hundred ninety-five thousand, four hundred forty".