387056887 has 4 divisors (see below), whose sum is σ = 442350736. Its totient is φ = 331763040.

The previous prime is 387056861. The next prime is 387056899. The reversal of 387056887 is 788650783.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-387056887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387056807) 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, 27646914 + ... + 27646927.

It is an arithmetic number, because the mean of its divisors is an integer number (110587684).

Almost surely, 2^387056887 is an apocalyptic number.

387056887 is a deficient number, since it is larger than the sum of its proper divisors (55293849).

387056887 is an equidigital number, since it uses as much as digits as its factorization.

387056887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55293848.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The square root of 387056887 is about 19673.7613841380. The cubic root of 387056887 is about 728.7718681794.

The spelling of 387056887 in words is "three hundred eighty-seven million, fifty-six thousand, eight hundred eighty-seven".