29912081 has 2 divisors, whose sum is σ = 29912082. Its totient is φ = 29912080.

The previous prime is 29912063. The next prime is 29912101. The reversal of 29912081 is 18021992.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27300625 + 2611456 = 5225^2 + 1616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29912081 is a prime.

It is a super-2 number, since 2×29912081² = 1789465179501122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29912041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14956040 + 14956041.

It is an arithmetic number, because the mean of its divisors is an integer number (14956041).

Almost surely, 2^29912081 is an apocalyptic number.

It is an amenable number.

29912081 is a deficient number, since it is larger than the sum of its proper divisors (1).

29912081 is an equidigital number, since it uses as much as digits as its factorization.

29912081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 29912081 is about 5469.1938162768. The cubic root of 29912081 is about 310.4194149530.

The spelling of 29912081 in words is "twenty-nine million, nine hundred twelve thousand, eighty-one".