2408381 has 4 divisors (see below), whose sum is σ = 2467164. Its totient is φ = 2349600.

The previous prime is 2408317. The next prime is 2408389. The reversal of 2408381 is 1838042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1838042 = 2 ⋅919021.

It can be written as a sum of positive squares in 2 ways, for example, as 320356 + 2088025 = 566^2 + 1445^2 .

It is a cyclic number.

It is not a de Polignac number, because 2408381 - 2⁶ = 2408317 is a prime.

It is a super-2 number, since 2×2408381² = 11600598082322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2408381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2408389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29330 + ... + 29411.

It is an arithmetic number, because the mean of its divisors is an integer number (616791).

2^2408381 is an apocalyptic number.

It is an amenable number.

2408381 is a deficient number, since it is larger than the sum of its proper divisors (58783).

2408381 is an equidigital number, since it uses as much as digits as its factorization.

2408381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58782.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 2408381 is about 1551.8959372329. The cubic root of 2408381 is about 134.0422566664.

The spelling of 2408381 in words is "two million, four hundred eight thousand, three hundred eighty-one".