387640323 has 60 divisors (see below), whose sum is σ = 680982192. Its totient is φ = 219088800.

The previous prime is 387640241. The next prime is 387640327. The reversal of 387640323 is 323046783.

387640323 is a `hidden beast` number, since 3 + 8 + 7 + 640 + 3 + 2 + 3 = 666.

It is not a de Polignac number, because 387640323 - 2²⁵ = 354085891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387640327) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 400386 + ... + 401352.

Almost surely, 2^387640323 is an apocalyptic number.

387640323 is a deficient number, since it is larger than the sum of its proper divisors (293341869).

387640323 is a wasteful number, since it uses less digits than its factorization.

387640323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 387640323 is about 19688.5835701810. The cubic root of 387640323 is about 729.1378594130.

The spelling of 387640323 in words is "three hundred eighty-seven million, six hundred forty thousand, three hundred twenty-three".