388977959 has 2 divisors, whose sum is σ = 388977960. Its totient is φ = 388977958.

The previous prime is 388977949. The next prime is 388977983. The reversal of 388977959 is 959779883.

It is a weak prime.

It is an emirp because it is prime and its reverse (959779883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 388977959 - 2²⁸ = 120542503 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 388977895 and 388977904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388977949) 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, 194488979 + 194488980.

It is an arithmetic number, because the mean of its divisors is an integer number (194488980).

Almost surely, 2^388977959 is an apocalyptic number.

388977959 is a deficient number, since it is larger than the sum of its proper divisors (1).

388977959 is an equidigital number, since it uses as much as digits as its factorization.

388977959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34292160, while the sum is 65.

The square root of 388977959 is about 19722.5241538704. The cubic root of 388977959 is about 729.9755787164.

The spelling of 388977959 in words is "three hundred eighty-eight million, nine hundred seventy-seven thousand, nine hundred fifty-nine".