387991883 has 8 divisors (see below), whose sum is σ = 394329600. Its totient is φ = 381693928.

The previous prime is 387991873. The next prime is 387991921. The reversal of 387991883 is 388199783.

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

It is a cyclic number.

It is not a de Polignac number, because 387991883 - 2¹⁰ = 387990859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387991823) 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, 10058 + ... + 29616.

It is an arithmetic number, because the mean of its divisors is an integer number (49291200).

Almost surely, 2^387991883 is an apocalyptic number.

387991883 is a deficient number, since it is larger than the sum of its proper divisors (6337717).

387991883 is a wasteful number, since it uses less digits than its factorization.

387991883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19881.

The product of its digits is 2612736, while the sum is 56.

The square root of 387991883 is about 19697.5095633940. The cubic root of 387991883 is about 729.3582168229.

The spelling of 387991883 in words is "three hundred eighty-seven million, nine hundred ninety-one thousand, eight hundred eighty-three".