29309291293 has 8 divisors (see below), whose sum is σ = 30735300600. Its totient is φ = 27910971648.

The previous prime is 29309291287. The next prime is 29309291327. The reversal of 29309291293 is 39219290392.

It can be written as a sum of positive squares in 4 ways, for example, as 968578884 + 28340712409 = 31122^2 + 168347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29309291293 is a prime.

It is a super-2 number, since 2×29309291293² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29309291233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6920248 + ... + 6924481.

It is an arithmetic number, because the mean of its divisors is an integer number (3841912575).

Almost surely, 2^29309291293 is an apocalyptic number.

It is an amenable number.

29309291293 is a deficient number, since it is larger than the sum of its proper divisors (1426009307).

29309291293 is a wasteful number, since it uses less digits than its factorization.

29309291293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13844831.

The product of its (nonzero) digits is 472392, while the sum is 49.

Subtracting 29309291293 from its reverse (39219290392), we obtain a palindrome (9909999099).

The spelling of 29309291293 in words is "twenty-nine billion, three hundred nine million, two hundred ninety-one thousand, two hundred ninety-three".