30438349 has 2 divisors, whose sum is σ = 30438350. Its totient is φ = 30438348.

The previous prime is 30438337. The next prime is 30438391. The reversal of 30438349 is 94383403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20766249 + 9672100 = 4557^2 + 3110^2 .

It is an emirp because it is prime and its reverse (94383403) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30438349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30438319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15219174 + 15219175.

It is an arithmetic number, because the mean of its divisors is an integer number (15219175).

Almost surely, 2^30438349 is an apocalyptic number.

It is an amenable number.

30438349 is a deficient number, since it is larger than the sum of its proper divisors (1).

30438349 is an equidigital number, since it uses as much as digits as its factorization.

30438349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 30438349 is about 5517.0960658665. The cubic root of 30438349 is about 312.2293302155.

The spelling of 30438349 in words is "thirty million, four hundred thirty-eight thousand, three hundred forty-nine".