387135839420 has 24 divisors (see below), whose sum is σ = 886893014448. Its totient is φ = 140776668800.

The previous prime is 387135839369. The next prime is 387135839459. The reversal of 387135839420 is 24938531783.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 879853961 + ... + 879854400.

It is an arithmetic number, because the mean of its divisors is an integer number (36953875602).

Almost surely, 2^387135839420 is an apocalyptic number.

It is an amenable number.

387135839420 is an abundant number, since it is smaller than the sum of its proper divisors (499757175028).

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

387135839420 is a wasteful number, since it uses less digits than its factorization.

387135839420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759708381 (or 1759708379 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 387135839420 in words is "three hundred eighty-seven billion, one hundred thirty-five million, eight hundred thirty-nine thousand, four hundred twenty".