29389138443 has 128 divisors (see below), whose sum is σ = 53149900800. Its totient is φ = 15692092416.

The previous prime is 29389138409. The next prime is 29389138463. The reversal of 29389138443 is 34483198392.

29389138443 is a `hidden beast` number, since 2 + 93 + 89 + 1 + 38 + 443 = 666.

It is not a de Polignac number, because 29389138443 - 2⁸ = 29389138187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29389138443.

It is not an unprimeable number, because it can be changed into a prime (29389138463) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 63475230 + ... + 63475692.

It is an arithmetic number, because the mean of its divisors is an integer number (415233600).

Almost surely, 2^29389138443 is an apocalyptic number.

29389138443 is a deficient number, since it is larger than the sum of its proper divisors (23760762357).

29389138443 is a wasteful number, since it uses less digits than its factorization.

29389138443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858 (or 852 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The spelling of 29389138443 in words is "twenty-nine billion, three hundred eighty-nine million, one hundred thirty-eight thousand, four hundred forty-three".