3988635 has 16 divisors (see below), whose sum is σ = 7293696. Its totient is φ = 1823328.

The previous prime is 3988627. The next prime is 3988643. The reversal of 3988635 is 5368893.

It is an interprime number because it is at equal distance from previous prime (3988627) and next prime (3988643).

It is not a de Polignac number, because 3988635 - 2³ = 3988627 is a prime.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18889 + ... + 19098.

It is an arithmetic number, because the mean of its divisors is an integer number (455856).

Almost surely, 2^3988635 is an apocalyptic number.

3988635 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3988635 is a deficient number, since it is larger than the sum of its proper divisors (3305061).

3988635 is a wasteful number, since it uses less digits than its factorization.

3988635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38002.

The product of its digits is 155520, while the sum is 42.

The square root of 3988635 is about 1997.1567289524. The cubic root of 3988635 is about 158.5896224791.

The spelling of 3988635 in words is "three million, nine hundred eighty-eight thousand, six hundred thirty-five".