30707409 has 4 divisors (see below), whose sum is σ = 40943216. Its totient is φ = 20471604.

The previous prime is 30707393. The next prime is 30707419. The reversal of 30707409 is 90470703.

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 not a de Polignac number, because 30707409 - 2⁴ = 30707393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30707419) 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, 5117899 + ... + 5117904.

It is an arithmetic number, because the mean of its divisors is an integer number (10235804).

Almost surely, 2^30707409 is an apocalyptic number.

It is an amenable number.

30707409 is a deficient number, since it is larger than the sum of its proper divisors (10235807).

30707409 is a wasteful number, since it uses less digits than its factorization.

30707409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10235806.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 30707409 is about 5541.4266213675. The cubic root of 30707409 is about 313.1466171665.

The spelling of 30707409 in words is "thirty million, seven hundred seven thousand, four hundred nine".