30408449 has 2 divisors, whose sum is σ = 30408450. Its totient is φ = 30408448.

The previous prime is 30408407. The next prime is 30408457. The reversal of 30408449 is 94480403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28890625 + 1517824 = 5375^2 + 1232^2 .

It is an emirp because it is prime and its reverse (94480403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30408449 - 2²⁰ = 29359873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30408149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15204224 + 15204225.

It is an arithmetic number, because the mean of its divisors is an integer number (15204225).

Almost surely, 2^30408449 is an apocalyptic number.

It is an amenable number.

30408449 is a deficient number, since it is larger than the sum of its proper divisors (1).

30408449 is an equidigital number, since it uses as much as digits as its factorization.

30408449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 30408449 is about 5514.3856412115. The cubic root of 30408449 is about 312.1270610299.

The spelling of 30408449 in words is "thirty million, four hundred eight thousand, four hundred forty-nine".