386977 has 2 divisors, whose sum is σ = 386978. Its totient is φ = 386976.

The previous prime is 386963. The next prime is 386987. The reversal of 386977 is 779683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309136 + 77841 = 556^2 + 279^2 .

It is a cyclic number.

It is not a de Polignac number, because 386977 - 2¹⁵ = 354209 is a prime.

It is a Chen prime.

386977 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (386927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193488 + 193489.

It is an arithmetic number, because the mean of its divisors is an integer number (193489).

2³⁸⁶⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

386977 is a deficient number, since it is larger than the sum of its proper divisors (1).

386977 is an equidigital number, since it uses as much as digits as its factorization.

386977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 40.

The square root of 386977 is about 622.0747543503. The cubic root of 386977 is about 72.8721726192.

The spelling of 386977 in words is "three hundred eighty-six thousand, nine hundred seventy-seven".