387883661 has 8 divisors (see below), whose sum is σ = 441543744. Its totient is φ = 337289920.

The previous prime is 387883649. The next prime is 387883663. The reversal of 387883661 is 166388783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-387883661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387883663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766316 + ... + 766821.

It is an arithmetic number, because the mean of its divisors is an integer number (55192968).

Almost surely, 2^387883661 is an apocalyptic number.

It is an amenable number.

387883661 is a deficient number, since it is larger than the sum of its proper divisors (53660083).

387883661 is a wasteful number, since it uses less digits than its factorization.

387883661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533171.

The product of its digits is 1161216, while the sum is 50.

The square root of 387883661 is about 19694.7622732543. The cubic root of 387883661 is about 729.2903975820.

The spelling of 387883661 in words is "three hundred eighty-seven million, eight hundred eighty-three thousand, six hundred sixty-one".