386774977 has 4 divisors (see below), whose sum is σ = 388280196. Its totient is φ = 385269760.

The previous prime is 386774957. The next prime is 386775029. The reversal of 386774977 is 779477683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 779477683 = 20749 ⋅37567.

It can be written as a sum of positive squares in 2 ways, for example, as 279424656 + 107350321 = 16716^2 + 10361^2 .

It is a cyclic number.

It is not a de Polignac number, because 386774977 - 2¹¹ = 386772929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (386774917) 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, 752224 + ... + 752737.

It is an arithmetic number, because the mean of its divisors is an integer number (97070049).

Almost surely, 2^386774977 is an apocalyptic number.

It is an amenable number.

386774977 is a deficient number, since it is larger than the sum of its proper divisors (1505219).

386774977 is a wasteful number, since it uses less digits than its factorization.

386774977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505218.

The product of its digits is 12446784, while the sum is 58.

The square root of 386774977 is about 19666.5954603231. The cubic root of 386774977 is about 728.5948933528.

The spelling of 386774977 in words is "three hundred eighty-six million, seven hundred seventy-four thousand, nine hundred seventy-seven".