30532979 has 2 divisors, whose sum is σ = 30532980. Its totient is φ = 30532978.

The previous prime is 30532973. The next prime is 30532991. The reversal of 30532979 is 97923503.

It is a weak prime.

It is an emirp because it is prime and its reverse (97923503) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30532979 is a prime.

It is a super-2 number, since 2×30532979² = 1864525613228882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30532973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15266489 + 15266490.

It is an arithmetic number, because the mean of its divisors is an integer number (15266490).

Almost surely, 2^30532979 is an apocalyptic number.

30532979 is a deficient number, since it is larger than the sum of its proper divisors (1).

30532979 is an equidigital number, since it uses as much as digits as its factorization.

30532979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 38.

The square root of 30532979 is about 5525.6654802838. The cubic root of 30532979 is about 312.5525594795.

The spelling of 30532979 in words is "thirty million, five hundred thirty-two thousand, nine hundred seventy-nine".