30013979 has 2 divisors, whose sum is σ = 30013980. Its totient is φ = 30013978.

The previous prime is 30013967. The next prime is 30013981. The reversal of 30013979 is 97931003.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (97931003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30013979 - 2⁸ = 30013723 is a prime.

Together with 30013981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30013909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15006989 + 15006990.

It is an arithmetic number, because the mean of its divisors is an integer number (15006990).

Almost surely, 2^30013979 is an apocalyptic number.

30013979 is a deficient number, since it is larger than the sum of its proper divisors (1).

30013979 is an equidigital number, since it uses as much as digits as its factorization.

30013979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 30013979 is about 5478.5015287029. The cubic root of 30013979 is about 310.7715053269.

The spelling of 30013979 in words is "thirty million, thirteen thousand, nine hundred seventy-nine".