30394809 has 6 divisors (see below), whose sum is σ = 43903626. Its totient is φ = 20263200.

The previous prime is 30394807. The next prime is 30394823. The reversal of 30394809 is 90849303.

It can be written as a sum of positive squares in only one way, i.e., 28355625 + 2039184 = 5325^2 + 1428^2 .

It is not a de Polignac number, because 30394809 - 2¹ = 30394807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30394807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1688592 + ... + 1688609.

It is an arithmetic number, because the mean of its divisors is an integer number (7317271).

Almost surely, 2^30394809 is an apocalyptic number.

It is an amenable number.

30394809 is a deficient number, since it is larger than the sum of its proper divisors (13508817).

30394809 is a wasteful number, since it uses less digits than its factorization.

30394809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3377207 (or 3377204 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 30394809 is about 5513.1487373369. The cubic root of 30394809 is about 312.0803848596.

The spelling of 30394809 in words is "thirty million, three hundred ninety-four thousand, eight hundred nine".