30480409 has 4 divisors (see below), whose sum is σ = 31463680. Its totient is φ = 29497140.

The previous prime is 30480391. The next prime is 30480413. The reversal of 30480409 is 90408403.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30480409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30480449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491589 + ... + 491650.

It is an arithmetic number, because the mean of its divisors is an integer number (7865920).

Almost surely, 2^30480409 is an apocalyptic number.

It is an amenable number.

30480409 is a deficient number, since it is larger than the sum of its proper divisors (983271).

30480409 is an equidigital number, since it uses as much as digits as its factorization.

30480409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983270.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 30480409 is about 5520.9065378794. The cubic root of 30480409 is about 312.3730778441.

The spelling of 30480409 in words is "thirty million, four hundred eighty thousand, four hundred nine".