129369887 has 2 divisors, whose sum is σ = 129369888. Its totient is φ = 129369886.

The previous prime is 129369869. The next prime is 129369893. The reversal of 129369887 is 788963921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129369887 - 2⁸ = 129369631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129369857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64684943 + 64684944.

It is an arithmetic number, because the mean of its divisors is an integer number (64684944).

Almost surely, 2^129369887 is an apocalyptic number.

129369887 is a deficient number, since it is larger than the sum of its proper divisors (1).

129369887 is an equidigital number, since it uses as much as digits as its factorization.

129369887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 53.

The square root of 129369887 is about 11374.0884030326. The cubic root of 129369887 is about 505.7599081250.

The spelling of 129369887 in words is "one hundred twenty-nine million, three hundred sixty-nine thousand, eight hundred eighty-seven".