387777115 has 16 divisors (see below), whose sum is σ = 510453216. Its totient is φ = 280454400.

The previous prime is 387777073. The next prime is 387777121. The reversal of 387777115 is 511777783.

It is not a de Polignac number, because 387777115 - 2¹⁷ = 387646043 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9522 + ... + 29431.

It is an arithmetic number, because the mean of its divisors is an integer number (31903326).

Almost surely, 2^387777115 is an apocalyptic number.

387777115 is a deficient number, since it is larger than the sum of its proper divisors (122676101).

387777115 is a wasteful number, since it uses less digits than its factorization.

387777115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39150.

The product of its digits is 288120, while the sum is 46.

The square root of 387777115 is about 19692.0571551070. The cubic root of 387777115 is about 729.2236163121.

The spelling of 387777115 in words is "three hundred eighty-seven million, seven hundred seventy-seven thousand, one hundred fifteen".