387799995 has 16 divisors (see below), whose sum is σ = 676887552. Its totient is φ = 188024160.

The previous prime is 387799981. The next prime is 387799999. The reversal of 387799995 is 599997783.

It is not a de Polignac number, because 387799995 - 2⁵ = 387799963 is a prime.

It is a super-2 number, since 2×387799995² = 300777672244000050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (387799999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1174987 + ... + 1175316.

It is an arithmetic number, because the mean of its divisors is an integer number (42305472).

Almost surely, 2^387799995 is an apocalyptic number.

387799995 is a deficient number, since it is larger than the sum of its proper divisors (289087557).

387799995 is a wasteful number, since it uses less digits than its factorization.

387799995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350322.

The product of its digits is 38578680, while the sum is 66.

The square root of 387799995 is about 19692.6380914290. The cubic root of 387799995 is about 729.2379581488.

The spelling of 387799995 in words is "three hundred eighty-seven million, seven hundred ninety-nine thousand, nine hundred ninety-five".