28629048989 has 2 divisors, whose sum is σ = 28629048990. Its totient is φ = 28629048988.

The previous prime is 28629048919. The next prime is 28629049039. The reversal of 28629048989 is 98984092682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18202596889 + 10426452100 = 134917^2 + 102110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28629048989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28629048919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14314524494 + 14314524495.

It is an arithmetic number, because the mean of its divisors is an integer number (14314524495).

Almost surely, 2^28629048989 is an apocalyptic number.

It is an amenable number.

28629048989 is a deficient number, since it is larger than the sum of its proper divisors (1).

28629048989 is an equidigital number, since it uses as much as digits as its factorization.

28629048989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35831808, while the sum is 65.

The spelling of 28629048989 in words is "twenty-eight billion, six hundred twenty-nine million, forty-eight thousand, nine hundred eighty-nine".