30479047 has 2 divisors, whose sum is σ = 30479048. Its totient is φ = 30479046.

The previous prime is 30479041. The next prime is 30479101. The reversal of 30479047 is 74097403.

It is a weak prime.

It is an emirp because it is prime and its reverse (74097403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30479047 - 2⁷ = 30478919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30479041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15239523 + 15239524.

It is an arithmetic number, because the mean of its divisors is an integer number (15239524).

Almost surely, 2^30479047 is an apocalyptic number.

30479047 is a deficient number, since it is larger than the sum of its proper divisors (1).

30479047 is an equidigital number, since it uses as much as digits as its factorization.

30479047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 30479047 is about 5520.7831871936. The cubic root of 30479047 is about 312.3684250361.

The spelling of 30479047 in words is "thirty million, four hundred seventy-nine thousand, forty-seven".