3988658 has 8 divisors (see below), whose sum is σ = 6006528. Its totient is φ = 1986484.

The previous prime is 3988643. The next prime is 3988661. The reversal of 3988658 is 8568893.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3266 + ... + 4317.

It is an arithmetic number, because the mean of its divisors is an integer number (750816).

Almost surely, 2^3988658 is an apocalyptic number.

3988658 is a deficient number, since it is larger than the sum of its proper divisors (2017870).

3988658 is a wasteful number, since it uses less digits than its factorization.

3988658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7848.

The product of its digits is 414720, while the sum is 47.

The square root of 3988658 is about 1997.1624871302. The cubic root of 3988658 is about 158.5899273080.

The spelling of 3988658 in words is "three million, nine hundred eighty-eight thousand, six hundred fifty-eight".