30480139 has 2 divisors, whose sum is σ = 30480140. Its totient is φ = 30480138.

The previous prime is 30480113. The next prime is 30480217. The reversal of 30480139 is 93108403.

It is a weak prime.

It is an emirp because it is prime and its reverse (93108403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30480139 - 2⁷ = 30480011 is a prime.

It is not a weakly prime, because it can be changed into another prime (30480239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15240069 + 15240070.

It is an arithmetic number, because the mean of its divisors is an integer number (15240070).

Almost surely, 2^30480139 is an apocalyptic number.

30480139 is a deficient number, since it is larger than the sum of its proper divisors (1).

30480139 is an equidigital number, since it uses as much as digits as its factorization.

30480139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 30480139 is about 5520.8820853193. The cubic root of 30480139 is about 312.3721554923.

The spelling of 30480139 in words is "thirty million, four hundred eighty thousand, one hundred thirty-nine".