386804487 has 4 divisors (see below), whose sum is σ = 515739320. Its totient is φ = 257869656.

The previous prime is 386804437. The next prime is 386804497. The reversal of 386804487 is 784408683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784408683 = 3 ⋅261469561.

It is not a de Polignac number, because 386804487 - 2⁶ = 386804423 is a prime.

It is a super-2 number, since 2×386804487² = 299235422326666338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386804437) 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, 64467412 + ... + 64467417.

It is an arithmetic number, because the mean of its divisors is an integer number (128934830).

Almost surely, 2^386804487 is an apocalyptic number.

386804487 is a deficient number, since it is larger than the sum of its proper divisors (128934833).

386804487 is a wasteful number, since it uses less digits than its factorization.

386804487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128934832.

The product of its (nonzero) digits is 1032192, while the sum is 48.

The square root of 386804487 is about 19667.3457029666. The cubic root of 386804487 is about 728.6134228939.

The spelling of 386804487 in words is "three hundred eighty-six million, eight hundred four thousand, four hundred eighty-seven".