386404682 has 4 divisors (see below), whose sum is σ = 579607026. Its totient is φ = 193202340.

The previous prime is 386404661. The next prime is 386404687. The reversal of 386404682 is 286404683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 286404683 = 1489 ⋅192347.

It can be written as a sum of positive squares in only one way, i.e., 332661121 + 53743561 = 18239^2 + 7331^2 .

It is a super-2 number, since 2×386404682² = 298617156543042248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (386404687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96601169 + ... + 96601172.

Almost surely, 2^386404682 is an apocalyptic number.

386404682 is a deficient number, since it is larger than the sum of its proper divisors (193202344).

386404682 is a wasteful number, since it uses less digits than its factorization.

386404682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193202343.

The product of its (nonzero) digits is 221184, while the sum is 41.

The square root of 386404682 is about 19657.1788922012. The cubic root of 386404682 is about 728.3623023048.

Subtracting from 386404682 its reverse (286404683), we obtain a palindrome (99999999).

The spelling of 386404682 in words is "three hundred eighty-six million, four hundred four thousand, six hundred eighty-two".