385977 has 4 divisors (see below), whose sum is σ = 514640. Its totient is φ = 257316.

The previous prime is 385967. The next prime is 385991. The reversal of 385977 is 779583.

385977 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 385977 - 2¹⁸ = 123833 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

385977 is strictly pandigital in base 7.

It is not an unprimeable number, because it can be changed into a prime (385907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64327 + ... + 64332.

It is an arithmetic number, because the mean of its divisors is an integer number (128660).

2³⁸⁵⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

385977 is a deficient number, since it is larger than the sum of its proper divisors (128663).

385977 is a wasteful number, since it uses less digits than its factorization.

385977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128662.

The product of its digits is 52920, while the sum is 39.

The square root of 385977 is about 621.2704724997. The cubic root of 385977 is about 72.8093480127.

The spelling of 385977 in words is "three hundred eighty-five thousand, nine hundred seventy-seven".