29979811 has 2 divisors, whose sum is σ = 29979812. Its totient is φ = 29979810.

The previous prime is 29979809. The next prime is 29979827. The reversal of 29979811 is 11897992.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29979811 - 2¹ = 29979809 is a prime.

Together with 29979809, 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 (29979311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14989905 + 14989906.

It is an arithmetic number, because the mean of its divisors is an integer number (14989906).

Almost surely, 2^29979811 is an apocalyptic number.

29979811 is a deficient number, since it is larger than the sum of its proper divisors (1).

29979811 is an equidigital number, since it uses as much as digits as its factorization.

29979811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 46.

The square root of 29979811 is about 5475.3822697598. The cubic root of 29979811 is about 310.6535328237.

The spelling of 29979811 in words is "twenty-nine million, nine hundred seventy-nine thousand, eight hundred eleven".