29806404919849 has 2 divisors, whose sum is σ = 29806404919850. Its totient is φ = 29806404919848.

The previous prime is 29806404919843. The next prime is 29806404919873. The reversal of 29806404919849 is 94891940460892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25935919223824 + 3870485696025 = 5092732^2 + 1967355^2 .

It is a cyclic number.

It is not a de Polignac number, because 29806404919849 - 2¹¹ = 29806404917801 is a prime.

It is a super-2 number, since 2×29806404919849² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29806404919843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14903202459924 + 14903202459925.

It is an arithmetic number, because the mean of its divisors is an integer number (14903202459925).

Almost surely, 2^{29806404919849} is an apocalyptic number.

It is an amenable number.

29806404919849 is a deficient number, since it is larger than the sum of its proper divisors (1).

29806404919849 is an equidigital number, since it uses as much as digits as its factorization.

29806404919849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322486272, while the sum is 73.

The spelling of 29806404919849 in words is "twenty-nine trillion, eight hundred six billion, four hundred four million, nine hundred nineteen thousand, eight hundred forty-nine".