388740379 has 2 divisors, whose sum is σ = 388740380. Its totient is φ = 388740378.

The previous prime is 388740371. The next prime is 388740413. The reversal of 388740379 is 973047883.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 388740379 - 2³ = 388740371 is a prime.

It is a super-2 number, since 2×388740379² = 302238164530127282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (388740371) by changing a digit.

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 as a sum of consecutive naturals, namely, 194370189 + 194370190.

It is an arithmetic number, because the mean of its divisors is an integer number (194370190).

Almost surely, 2^388740379 is an apocalyptic number.

388740379 is a deficient number, since it is larger than the sum of its proper divisors (1).

388740379 is an equidigital number, since it uses as much as digits as its factorization.

388740379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 388740379 is about 19716.5001711764. The cubic root of 388740379 is about 729.8269302607.

The spelling of 388740379 in words is "three hundred eighty-eight million, seven hundred forty thousand, three hundred seventy-nine".