4097988 has 36 divisors (see below), whose sum is σ = 10519600. Its totient is φ = 1344816.

The previous prime is 4097987. The next prime is 4098011. The reversal of 4097988 is 8897904.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (4097981) 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, 1563 + ... + 3261.

Almost surely, 2^4097988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4097988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5259800).

4097988 is an abundant number, since it is smaller than the sum of its proper divisors (6421612).

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

4097988 is a wasteful number, since it uses less digits than its factorization.

4097988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776 (or 1771 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 4097988 is about 2024.3487841773. The cubic root of 4097988 is about 160.0258812300.

The spelling of 4097988 in words is "four million, ninety-seven thousand, nine hundred eighty-eight".