30133409 has 4 divisors (see below), whose sum is σ = 30333120. Its totient is φ = 29933700.

The previous prime is 30133403. The next prime is 30133421. The reversal of 30133409 is 90433103.

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: 90433103 = 19 ⋅4759637.

It is a cyclic number.

It is not a de Polignac number, because 30133409 - 2²⁰ = 29084833 is a prime.

It is a super-2 number, since 2×30133409² = 1816044675922562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30133403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99629 + ... + 99930.

It is an arithmetic number, because the mean of its divisors is an integer number (7583280).

Almost surely, 2^30133409 is an apocalyptic number.

It is an amenable number.

30133409 is a deficient number, since it is larger than the sum of its proper divisors (199711).

30133409 is a wasteful number, since it uses less digits than its factorization.

30133409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199710.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 30133409 is about 5489.3905854840. The cubic root of 30133409 is about 311.1831615107.

The spelling of 30133409 in words is "thirty million, one hundred thirty-three thousand, four hundred nine".