29969824397 has 4 divisors (see below), whose sum is σ = 29987119740. Its totient is φ = 29952529056.

The previous prime is 29969824393. The next prime is 29969824429. The reversal of 29969824397 is 79342896992.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24014461156 + 5955363241 = 154966^2 + 77171^2 .

It is a cyclic number.

It is not a de Polignac number, because 29969824397 - 2² = 29969824393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29969824393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8645072 + ... + 8648537.

It is an arithmetic number, because the mean of its divisors is an integer number (7496779935).

Almost surely, 2^29969824397 is an apocalyptic number.

It is an amenable number.

29969824397 is a deficient number, since it is larger than the sum of its proper divisors (17295343).

29969824397 is a wasteful number, since it uses less digits than its factorization.

29969824397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17295342.

The product of its digits is 105815808, while the sum is 68.

The spelling of 29969824397 in words is "twenty-nine billion, nine hundred sixty-nine million, eight hundred twenty-four thousand, three hundred ninety-seven".