3988998 has 24 divisors (see below), whose sum is σ = 9308208. Its totient is φ = 1227312.

The previous prime is 3988991. The next prime is 3989003. The reversal of 3988998 is 8998893.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3988991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8290 + ... + 8757.

It is an arithmetic number, because the mean of its divisors is an integer number (387842).

Almost surely, 2^3988998 is an apocalyptic number.

3988998 is an abundant number, since it is smaller than the sum of its proper divisors (5319210).

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

3988998 is a wasteful number, since it uses less digits than its factorization.

3988998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17068 (or 17065 counting only the distinct ones).

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

The square root of 3988998 is about 1997.2476060819. The cubic root of 3988998 is about 158.5944333385.

The spelling of 3988998 in words is "three million, nine hundred eighty-eight thousand, nine hundred ninety-eight".