2408981 has 2 divisors, whose sum is σ = 2408982. Its totient is φ = 2408980.

The previous prime is 2408971. The next prime is 2408983. The reversal of 2408981 is 1898042.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2280100 + 128881 = 1510^2 + 359^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2408981 is a prime.

It is a super-2 number, since 2×2408981² = 11606378916722, which contains 22 as substring.

Together with 2408983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2408983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1204490 + 1204491.

It is an arithmetic number, because the mean of its divisors is an integer number (1204491).

2^2408981 is an apocalyptic number.

It is an amenable number.

2408981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2408981 is an equidigital number, since it uses as much as digits as its factorization.

2408981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 2408981 is about 1552.0892371252. The cubic root of 2408981 is about 134.0533870587.

The spelling of 2408981 in words is "two million, four hundred eight thousand, nine hundred eighty-one".