3998156 has 12 divisors (see below), whose sum is σ = 7167720. Its totient is φ = 1950240.

The previous prime is 3998131. The next prime is 3998171. The reversal of 3998156 is 6518993.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12026 + ... + 12353.

It is an arithmetic number, because the mean of its divisors is an integer number (597310).

Almost surely, 2^3998156 is an apocalyptic number.

It is an amenable number.

3998156 is a deficient number, since it is larger than the sum of its proper divisors (3169564).

3998156 is a wasteful number, since it uses less digits than its factorization.

3998156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24424 (or 24422 counting only the distinct ones).

The product of its digits is 58320, while the sum is 41.

The square root of 3998156 is about 1999.5389468575. The cubic root of 3998156 is about 158.7157083846.

The spelling of 3998156 in words is "three million, nine hundred ninety-eight thousand, one hundred fifty-six".