30345409 has 4 divisors (see below), whose sum is σ = 30991104. Its totient is φ = 29699716.

The previous prime is 30345407. The next prime is 30345433. The reversal of 30345409 is 90454303.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90454303 = 1223 ⋅73961.

It is a cyclic number.

It is not a de Polignac number, because 30345409 - 2¹ = 30345407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30345407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322777 + ... + 322870.

It is an arithmetic number, because the mean of its divisors is an integer number (7747776).

Almost surely, 2^30345409 is an apocalyptic number.

It is an amenable number.

30345409 is a deficient number, since it is larger than the sum of its proper divisors (645695).

30345409 is an equidigital number, since it uses as much as digits as its factorization.

30345409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645694.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 30345409 is about 5508.6667170923. Note that the first 3 decimals coincide. The cubic root of 30345409 is about 311.9112207682.

The spelling of 30345409 in words is "thirty million, three hundred forty-five thousand, four hundred nine".