129699343 has 2 divisors, whose sum is σ = 129699344. Its totient is φ = 129699342.

The previous prime is 129699331. The next prime is 129699373. The reversal of 129699343 is 343996921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129699343 - 2¹³ = 129691151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129699293 and 129699302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129699313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64849671 + 64849672.

It is an arithmetic number, because the mean of its divisors is an integer number (64849672).

Almost surely, 2^129699343 is an apocalyptic number.

129699343 is a deficient number, since it is larger than the sum of its proper divisors (1).

129699343 is an equidigital number, since it uses as much as digits as its factorization.

129699343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 46.

The square root of 129699343 is about 11388.5619373124. The cubic root of 129699343 is about 506.1888703713.

The spelling of 129699343 in words is "one hundred twenty-nine million, six hundred ninety-nine thousand, three hundred forty-three".