387861107 has 4 divisors (see below), whose sum is σ = 397321176. Its totient is φ = 378401040.

The previous prime is 387861083. The next prime is 387861139. The reversal of 387861107 is 701168783.

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 387861107 - 2²⁸ = 119425651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 9460027 = 387861107 / (3 + 8 + 7 + 8 + 6 + 1 + 1 + 0 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387861707) 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, 4729973 + ... + 4730054.

It is an arithmetic number, because the mean of its divisors is an integer number (99330294).

Almost surely, 2^387861107 is an apocalyptic number.

387861107 is a deficient number, since it is larger than the sum of its proper divisors (9460069).

387861107 is an equidigital number, since it uses as much as digits as its factorization.

387861107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9460068.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 387861107 is about 19694.1896761456. The cubic root of 387861107 is about 729.2762621284.

It can be divided in two parts, 38786 and 1107, that added together give a palindrome (39893).

The spelling of 387861107 in words is "three hundred eighty-seven million, eight hundred sixty-one thousand, one hundred seven".