129290293 has 16 divisors (see below), whose sum is σ = 146722752. Its totient is φ = 112896000.

The previous prime is 129290263. The next prime is 129290297. The reversal of 129290293 is 392092921.

It is a cyclic number.

It is not a de Polignac number, because 129290293 - 2⁹ = 129289781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129290297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26613 + ... + 31093.

It is an arithmetic number, because the mean of its divisors is an integer number (9170172).

Almost surely, 2^129290293 is an apocalyptic number.

It is an amenable number.

129290293 is a deficient number, since it is larger than the sum of its proper divisors (17432459).

129290293 is a wasteful number, since it uses less digits than its factorization.

129290293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 129290293 is about 11370.5889469279. The cubic root of 129290293 is about 505.6561649910.

The spelling of 129290293 in words is "one hundred twenty-nine million, two hundred ninety thousand, two hundred ninety-three".