3988626 has 8 divisors (see below), whose sum is σ = 7977264. Its totient is φ = 1329540.

The previous prime is 3988619. The next prime is 3988627. The reversal of 3988626 is 6268893.

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

3988626 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3988627) 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, 332380 + ... + 332391.

It is an arithmetic number, because the mean of its divisors is an integer number (997158).

Almost surely, 2^3988626 is an apocalyptic number.

3988626 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3988626 is a wasteful number, since it uses less digits than its factorization.

3988626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664776.

The product of its digits is 124416, while the sum is 42.

The square root of 3988626 is about 1997.1544757479. The cubic root of 3988626 is about 158.5895031979.

The spelling of 3988626 in words is "three million, nine hundred eighty-eight thousand, six hundred twenty-six".