387901857 has 32 divisors (see below), whose sum is σ = 609472512. Its totient is φ = 214856064.

The previous prime is 387901847. The next prime is 387901889. The reversal of 387901857 is 758109783.

It is not a de Polignac number, because 387901857 - 2⁴ = 387901841 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (387901807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103773 + ... + 107445.

It is an arithmetic number, because the mean of its divisors is an integer number (19046016).

Almost surely, 2^387901857 is an apocalyptic number.

It is an amenable number.

387901857 is a deficient number, since it is larger than the sum of its proper divisors (221570655).

387901857 is a wasteful number, since it uses less digits than its factorization.

387901857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3837.

The product of its (nonzero) digits is 423360, while the sum is 48.

The square root of 387901857 is about 19695.2242180687. The cubic root of 387901857 is about 729.3018013111.

The spelling of 387901857 in words is "three hundred eighty-seven million, nine hundred one thousand, eight hundred fifty-seven".