29985911 has 2 divisors, whose sum is σ = 29985912. Its totient is φ = 29985910.

The previous prime is 29985899. The next prime is 29985919. The reversal of 29985911 is 11958992.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29985911 - 2¹⁰ = 29984887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29985919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14992955 + 14992956.

It is an arithmetic number, because the mean of its divisors is an integer number (14992956).

Almost surely, 2^29985911 is an apocalyptic number.

29985911 is a deficient number, since it is larger than the sum of its proper divisors (1).

29985911 is an equidigital number, since it uses as much as digits as its factorization.

29985911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 44.

The square root of 29985911 is about 5475.9392801601. The cubic root of 29985911 is about 310.6746009801.

The spelling of 29985911 in words is "twenty-nine million, nine hundred eighty-five thousand, nine hundred eleven".