29491000289 has 2 divisors, whose sum is σ = 29491000290. Its totient is φ = 29491000288.

The previous prime is 29491000211. The next prime is 29491000339. The reversal of 29491000289 is 98200019492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23286760000 + 6204240289 = 152600^2 + 78767^2 .

It is a cyclic number.

It is not a de Polignac number, because 29491000289 - 2¹² = 29490996193 is a prime.

It is not a weakly prime, because it can be changed into another prime (29490000289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14745500144 + 14745500145.

It is an arithmetic number, because the mean of its divisors is an integer number (14745500145).

Almost surely, 2^29491000289 is an apocalyptic number.

It is an amenable number.

29491000289 is a deficient number, since it is larger than the sum of its proper divisors (1).

29491000289 is an equidigital number, since it uses as much as digits as its factorization.

29491000289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 29491000289 in words is "twenty-nine billion, four hundred ninety-one million, two hundred eighty-nine", and thus it is an aban number.