387976155 has 16 divisors (see below), whose sum is σ = 709442304. Its totient is φ = 177360480.

The previous prime is 387976139. The next prime is 387976157. The reversal of 387976155 is 551679783.

It is not a de Polignac number, because 387976155 - 2⁴ = 387976139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 387976098 and 387976107.

It is not an unprimeable number, because it can be changed into a prime (387976157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1847401 + ... + 1847610.

It is an arithmetic number, because the mean of its divisors is an integer number (44340144).

Almost surely, 2^387976155 is an apocalyptic number.

387976155 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

387976155 is a deficient number, since it is larger than the sum of its proper divisors (321466149).

387976155 is a wasteful number, since it uses less digits than its factorization.

387976155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695026.

The product of its digits is 1587600, while the sum is 51.

The square root of 387976155 is about 19697.1103210598. The cubic root of 387976155 is about 729.3483613753.

The spelling of 387976155 in words is "three hundred eighty-seven million, nine hundred seventy-six thousand, one hundred fifty-five".