129247883 has 2 divisors, whose sum is σ = 129247884. Its totient is φ = 129247882.

The previous prime is 129247843. The next prime is 129247907. The reversal of 129247883 is 388742921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129247883 - 2⁸ = 129247627 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (129247843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64623941 + 64623942.

It is an arithmetic number, because the mean of its divisors is an integer number (64623942).

Almost surely, 2^129247883 is an apocalyptic number.

129247883 is a deficient number, since it is larger than the sum of its proper divisors (1).

129247883 is an equidigital number, since it uses as much as digits as its factorization.

129247883 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 129247883 is about 11368.7238949673. The cubic root of 129247883 is about 505.6008702412.

The spelling of 129247883 in words is "one hundred twenty-nine million, two hundred forty-seven thousand, eight hundred eighty-three".