3998898 has 12 divisors (see below), whose sum is σ = 8664318. Its totient is φ = 1332960.

The previous prime is 3998881. The next prime is 3998899. The reversal of 3998898 is 8988993.

It can be written as a sum of positive squares in only one way, i.e., 3337929 + 660969 = 1827^2 + 813^2 .

It is not an unprimeable number, because it can be changed into a prime (3998899) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111063 + ... + 111098.

Almost surely, 2^3998898 is an apocalyptic number.

3998898 is an abundant number, since it is smaller than the sum of its proper divisors (4665420).

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

3998898 is a wasteful number, since it uses less digits than its factorization.

3998898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222169 (or 222166 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 3998898 is about 1999.7244810223. The cubic root of 3998898 is about 158.7255262249.

The spelling of 3998898 in words is "three million, nine hundred ninety-eight thousand, eight hundred ninety-eight".