29394661789 has 2 divisors, whose sum is σ = 29394661790. Its totient is φ = 29394661788.

The previous prime is 29394661763. The next prime is 29394661799. The reversal of 29394661789 is 98716649392.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23015924100 + 6378737689 = 151710^2 + 79867^2 .

It is a cyclic number.

It is not a de Polignac number, because 29394661789 - 2¹⁷ = 29394530717 is a prime.

It is a super-2 number, since 2×29394661789² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 29394661789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29394661799) 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 as a sum of consecutive naturals, namely, 14697330894 + 14697330895.

It is an arithmetic number, because the mean of its divisors is an integer number (14697330895).

Almost surely, 2^29394661789 is an apocalyptic number.

It is an amenable number.

29394661789 is a deficient number, since it is larger than the sum of its proper divisors (1).

29394661789 is an equidigital number, since it uses as much as digits as its factorization.

29394661789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35271936, while the sum is 64.

The spelling of 29394661789 in words is "twenty-nine billion, three hundred ninety-four million, six hundred sixty-one thousand, seven hundred eighty-nine".