388977 has 16 divisors (see below), whose sum is σ = 570240. Its totient is φ = 234752.

The previous prime is 388963. The next prime is 388991. The reversal of 388977 is 779883.

It is an interprime number because it is at equal distance from previous prime (388963) and next prime (388991).

It is a cyclic number.

It is not a de Polignac number, because 388977 - 2⁴ = 388961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (388937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1348 + ... + 1610.

It is an arithmetic number, because the mean of its divisors is an integer number (35640).

2³⁸⁸⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

388977 is a deficient number, since it is larger than the sum of its proper divisors (181263).

388977 is a wasteful number, since it uses less digits than its factorization.

388977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312.

The product of its digits is 84672, while the sum is 42.

The square root of 388977 is about 623.6802065161. The cubic root of 388977 is about 72.9974978813.

The spelling of 388977 in words is "three hundred eighty-eight thousand, nine hundred seventy-seven".