386887042 has 4 divisors (see below), whose sum is σ = 580330566. Its totient is φ = 193443520.

The previous prime is 386887031. The next prime is 386887043. The reversal of 386887042 is 240788683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240788683 = 1163 ⋅207041.

It can be written as a sum of positive squares in only one way, i.e., 368985681 + 17901361 = 19209^2 + 4231^2 .

It is a junction number, because it is equal to n+sod(n) for n = 386886983 and 386887001.

It is not an unprimeable number, because it can be changed into a prime (386887043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96721759 + ... + 96721762.

Almost surely, 2^386887042 is an apocalyptic number.

386887042 is a deficient number, since it is larger than the sum of its proper divisors (193443524).

386887042 is a wasteful number, since it uses less digits than its factorization.

386887042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193443523.

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 386887042 is about 19669.4443744606. Note that the first 3 decimals coincide. The cubic root of 386887042 is about 728.6652547662.

The spelling of 386887042 in words is "three hundred eighty-six million, eight hundred eighty-seven thousand, forty-two".