3987178 has 8 divisors (see below), whose sum is σ = 6440868. Its totient is φ = 1840224.

The previous prime is 3987173. The next prime is 3987199. The reversal of 3987178 is 8717893.

It can be written as a sum of positive squares in 2 ways, for example, as 3972049 + 15129 = 1993^2 + 123^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3987173) 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, 76651 + ... + 76702.

Almost surely, 2^3987178 is an apocalyptic number.

3987178 is a deficient number, since it is larger than the sum of its proper divisors (2453690).

3987178 is a wasteful number, since it uses less digits than its factorization.

3987178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153368.

The product of its digits is 84672, while the sum is 43.

The square root of 3987178 is about 1996.7919270670. The cubic root of 3987178 is about 158.5703098386.

The spelling of 3987178 in words is "three million, nine hundred eighty-seven thousand, one hundred seventy-eight".