387930378779 has 4 divisors (see below), whose sum is σ = 387933134160. Its totient is φ = 387927623400.

The previous prime is 387930378769. The next prime is 387930378791. The reversal of 387930378779 is 977873039783.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 387930378779 - 2³² = 383635411483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387930378769) 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, 1154447 + ... + 1452104.

It is an arithmetic number, because the mean of its divisors is an integer number (96983283540).

Almost surely, 2^387930378779 is an apocalyptic number.

387930378779 is a deficient number, since it is larger than the sum of its proper divisors (2755381).

387930378779 is a wasteful number, since it uses less digits than its factorization.

387930378779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755380.

The product of its (nonzero) digits is 336063168, while the sum is 71.

The spelling of 387930378779 in words is "three hundred eighty-seven billion, nine hundred thirty million, three hundred seventy-eight thousand, seven hundred seventy-nine".