386478623 has 4 divisors (see below), whose sum is σ = 388181400. Its totient is φ = 384775848.

The previous prime is 386478619. The next prime is 386478671. The reversal of 386478623 is 326874683.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 386478623 - 2² = 386478619 is a prime.

It is a super-2 number, since 2×386478623² = 298731452071952258, 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 (386478613) 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, 851048 + ... + 851501.

It is an arithmetic number, because the mean of its divisors is an integer number (97045350).

Almost surely, 2^386478623 is an apocalyptic number.

386478623 is a deficient number, since it is larger than the sum of its proper divisors (1702777).

386478623 is a wasteful number, since it uses less digits than its factorization.

386478623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702776.

The product of its digits is 1161216, while the sum is 47.

The square root of 386478623 is about 19659.0595655031. The cubic root of 386478623 is about 728.4087582655.

The spelling of 386478623 in words is "three hundred eighty-six million, four hundred seventy-eight thousand, six hundred twenty-three".