30499841 has 2 divisors, whose sum is σ = 30499842. Its totient is φ = 30499840.

The previous prime is 30499829. The next prime is 30499849. The reversal of 30499841 is 14899403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29866225 + 633616 = 5465^2 + 796^2 .

It is an emirp because it is prime and its reverse (14899403) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30499841 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30499795 and 30499804.

It is not a weakly prime, because it can be changed into another prime (30499849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15249920 + 15249921.

It is an arithmetic number, because the mean of its divisors is an integer number (15249921).

Almost surely, 2^30499841 is an apocalyptic number.

It is an amenable number.

30499841 is a deficient number, since it is larger than the sum of its proper divisors (1).

30499841 is an equidigital number, since it uses as much as digits as its factorization.

30499841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 30499841 is about 5522.6661133912. Note that the first 3 decimals coincide. The cubic root of 30499841 is about 312.4394455469.

The spelling of 30499841 in words is "thirty million, four hundred ninety-nine thousand, eight hundred forty-one".