129284833 has 2 divisors, whose sum is σ = 129284834. Its totient is φ = 129284832.

The previous prime is 129284821. The next prime is 129284893. The reversal of 129284833 is 338482921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87385104 + 41899729 = 9348^2 + 6473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129284833 is a prime.

It is not a weakly prime, because it can be changed into another prime (129284893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64642416 + 64642417.

It is an arithmetic number, because the mean of its divisors is an integer number (64642417).

Almost surely, 2^129284833 is an apocalyptic number.

It is an amenable number.

129284833 is a deficient number, since it is larger than the sum of its proper divisors (1).

129284833 is an equidigital number, since it uses as much as digits as its factorization.

129284833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 129284833 is about 11370.3488512886. The cubic root of 129284833 is about 505.6490468450.

The spelling of 129284833 in words is "one hundred twenty-nine million, two hundred eighty-four thousand, eight hundred thirty-three".