387356638 has 4 divisors (see below), whose sum is σ = 581034960. Its totient is φ = 193678318.

The previous prime is 387356609. The next prime is 387356689. The reversal of 387356638 is 836653783.

It is a happy number.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 387356591 and 387356600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96839158 + ... + 96839161.

It is an arithmetic number, because the mean of its divisors is an integer number (145258740).

Almost surely, 2^387356638 is an apocalyptic number.

387356638 is a deficient number, since it is larger than the sum of its proper divisors (193678322).

387356638 is a wasteful number, since it uses less digits than its factorization.

387356638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193678321.

The product of its digits is 2177280, while the sum is 49.

The square root of 387356638 is about 19681.3779497270. The cubic root of 387356638 is about 728.9599488259.

The spelling of 387356638 in words is "three hundred eighty-seven million, three hundred fifty-six thousand, six hundred thirty-eight".