388868377 has 2 divisors, whose sum is σ = 388868378. Its totient is φ = 388868376.

The previous prime is 388868357. The next prime is 388868407. The reversal of 388868377 is 773868883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378730521 + 10137856 = 19461^2 + 3184^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388868377 is a prime.

It is a super-2 number, since 2×388868377² = 302437229261228258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (388868357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194434188 + 194434189.

It is an arithmetic number, because the mean of its divisors is an integer number (194434189).

Almost surely, 2^388868377 is an apocalyptic number.

It is an amenable number.

388868377 is a deficient number, since it is larger than the sum of its proper divisors (1).

388868377 is an equidigital number, since it uses as much as digits as its factorization.

388868377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10838016, while the sum is 58.

The square root of 388868377 is about 19719.7458655024. The cubic root of 388868377 is about 729.9070232495.

The spelling of 388868377 in words is "three hundred eighty-eight million, eight hundred sixty-eight thousand, three hundred seventy-seven".