30349439 has 2 divisors, whose sum is σ = 30349440. Its totient is φ = 30349438.

The previous prime is 30349433. The next prime is 30349453. The reversal of 30349439 is 93494303.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30349439 is a prime.

It is a super-2 number, since 2×30349439² = 1842176895229442, which contains 22 as substring.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 30349399 and 30349408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30349433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15174719 + 15174720.

It is an arithmetic number, because the mean of its divisors is an integer number (15174720).

Almost surely, 2^30349439 is an apocalyptic number.

30349439 is a deficient number, since it is larger than the sum of its proper divisors (1).

30349439 is an equidigital number, since it uses as much as digits as its factorization.

30349439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 30349439 is about 5509.0324921895. The cubic root of 30349439 is about 311.9250278714.

The spelling of 30349439 in words is "thirty million, three hundred forty-nine thousand, four hundred thirty-nine".