29403937393 has 4 divisors (see below), whose sum is σ = 29695065588. Its totient is φ = 29112809200.

The previous prime is 29403937301. The next prime is 29403937529. The reversal of 29403937393 is 39373930492.

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 27966541824 + 1437395569 = 167232^2 + 37913^2 .

It is a cyclic number.

It is not a de Polignac number, because 29403937393 - 2³³ = 20814002801 is a prime.

It is a super-2 number, since 2×29403937393² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29403937393.

It is not an unprimeable number, because it can be changed into a prime (29403937993) 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 3 ways as a sum of consecutive naturals, for example, 145563946 + ... + 145564147.

It is an arithmetic number, because the mean of its divisors is an integer number (7423766397).

Almost surely, 2^29403937393 is an apocalyptic number.

It is an amenable number.

29403937393 is a deficient number, since it is larger than the sum of its proper divisors (291128195).

29403937393 is a wasteful number, since it uses less digits than its factorization.

29403937393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291128194.

The product of its (nonzero) digits is 3306744, while the sum is 52.

The spelling of 29403937393 in words is "twenty-nine billion, four hundred three million, nine hundred thirty-seven thousand, three hundred ninety-three".