3998136 has 32 divisors (see below), whose sum is σ = 10431360. Its totient is φ = 1274592.

The previous prime is 3998131. The next prime is 3998171. The reversal of 3998136 is 6318993.

It is a junction number, because it is equal to n+sod(n) for n = 3998094 and 3998103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3070 + ... + 4173.

It is an arithmetic number, because the mean of its divisors is an integer number (325980).

Almost surely, 2^3998136 is an apocalyptic number.

It is an amenable number.

3998136 is an abundant number, since it is smaller than the sum of its proper divisors (6433224).

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

3998136 is a wasteful number, since it uses less digits than its factorization.

3998136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7275 (or 7271 counting only the distinct ones).

The product of its digits is 34992, while the sum is 39.

The square root of 3998136 is about 1999.5339456983. The cubic root of 3998136 is about 158.7154437360.

The spelling of 3998136 in words is "three million, nine hundred ninety-eight thousand, one hundred thirty-six".