388319377 has 4 divisors (see below), whose sum is σ = 393788736. Its totient is φ = 382850020.

The previous prime is 388319357. The next prime is 388319383. The reversal of 388319377 is 773913883.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 773913883 = 8641 ⋅89563.

It is a cyclic number.

It is not a de Polignac number, because 388319377 - 2⁷ = 388319249 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 388319377.

It is not an unprimeable number, because it can be changed into a prime (388319317) 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, 2734573 + ... + 2734714.

It is an arithmetic number, because the mean of its divisors is an integer number (98447184).

Almost surely, 2^388319377 is an apocalyptic number.

It is an amenable number.

388319377 is a deficient number, since it is larger than the sum of its proper divisors (5469359).

388319377 is an equidigital number, since it uses as much as digits as its factorization.

388319377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5469358.

The product of its digits is 762048, while the sum is 49.

The square root of 388319377 is about 19705.8208913001. The cubic root of 388319377 is about 729.5633699687.

The spelling of 388319377 in words is "three hundred eighty-eight million, three hundred nineteen thousand, three hundred seventy-seven".