4088981 has 8 divisors (see below), whose sum is σ = 4523064. Its totient is φ = 3672000.

The previous prime is 4088977. The next prime is 4089011. The reversal of 4088981 is 1898804.

4088981 = 384² + 385² + ... + 409².

It can be written as a sum of positive squares in 4 ways, for example, as 128881 + 3960100 = 359^2 + 1990^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4088981 - 2² = 4088977 is a prime.

It is a super-2 number, since 2×4088981² = 33439531236722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4088911) 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, 3770 + ... + 4731.

It is an arithmetic number, because the mean of its divisors is an integer number (565383).

Almost surely, 2^4088981 is an apocalyptic number.

It is an amenable number.

4088981 is a deficient number, since it is larger than the sum of its proper divisors (434083).

4088981 is a wasteful number, since it uses less digits than its factorization.

4088981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8551.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 4088981 is about 2022.1228943860. The cubic root of 4088981 is about 159.9085545166.

The spelling of 4088981 in words is "four million, eighty-eight thousand, nine hundred eighty-one".