129290663 has 2 divisors, whose sum is σ = 129290664. Its totient is φ = 129290662.

The previous prime is 129290641. The next prime is 129290683. The reversal of 129290663 is 366092921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129290663 - 2¹² = 129286567 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129290633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64645331 + 64645332.

It is an arithmetic number, because the mean of its divisors is an integer number (64645332).

Almost surely, 2^129290663 is an apocalyptic number.

129290663 is a deficient number, since it is larger than the sum of its proper divisors (1).

129290663 is an equidigital number, since it uses as much as digits as its factorization.

129290663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 129290663 is about 11370.6052169618. The cubic root of 129290663 is about 505.6566473489.

The spelling of 129290663 in words is "one hundred twenty-nine million, two hundred ninety thousand, six hundred sixty-three".