30049979 has 2 divisors, whose sum is σ = 30049980. Its totient is φ = 30049978.

The previous prime is 30049973. The next prime is 30050047. The reversal of 30049979 is 97994003.

It is a weak prime.

It is an emirp because it is prime and its reverse (97994003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30049979 - 2²⁰ = 29001403 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30049973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15024989 + 15024990.

It is an arithmetic number, because the mean of its divisors is an integer number (15024990).

Almost surely, 2^30049979 is an apocalyptic number.

30049979 is a deficient number, since it is larger than the sum of its proper divisors (1).

30049979 is an equidigital number, since it uses as much as digits as its factorization.

30049979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 30049979 is about 5481.7861140325. The cubic root of 30049979 is about 310.8957063883.

The spelling of 30049979 in words is "thirty million, forty-nine thousand, nine hundred seventy-nine".