2409281 has 6 divisors (see below), whose sum is σ = 2802690. Its totient is φ = 2065056.

The previous prime is 2409271. The next prime is 2409299. The reversal of 2409281 is 1829042.

It can be written as a sum of positive squares in only one way, i.e., 2202256 + 207025 = 1484^2 + 455^2 .

It is not a de Polignac number, because 2409281 - 2⁶ = 2409217 is a prime.

It is a super-2 number, since 2×2409281² = 11609269873922, 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 2409281.

It is not an unprimeable number, because it can be changed into a prime (2409271) 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, 24536 + ... + 24633.

It is an arithmetic number, because the mean of its divisors is an integer number (467115).

2^2409281 is an apocalyptic number.

It is an amenable number.

2409281 is a deficient number, since it is larger than the sum of its proper divisors (393409).

2409281 is an equidigital number, since it uses as much as digits as its factorization.

2409281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49183 (or 49176 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2409281 is about 1552.1858780443. The cubic root of 2409281 is about 134.0589515618.

The spelling of 2409281 in words is "two million, four hundred nine thousand, two hundred eighty-one".