129049883 has 4 divisors (see below), whose sum is σ = 129309000. Its totient is φ = 128790768.

The previous prime is 129049861. The next prime is 129049889. The reversal of 129049883 is 388940921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 388940921 = 59 ⋅6592219.

It is a cyclic number.

It is not a de Polignac number, because 129049883 - 2¹⁸ = 128787739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129049889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128810 + ... + 129807.

It is an arithmetic number, because the mean of its divisors is an integer number (32327250).

Almost surely, 2^129049883 is an apocalyptic number.

129049883 is a deficient number, since it is larger than the sum of its proper divisors (259117).

129049883 is an equidigital number, since it uses as much as digits as its factorization.

129049883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259116.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 129049883 is about 11360.0124559791. The cubic root of 129049883 is about 505.3425548918.

The spelling of 129049883 in words is "one hundred twenty-nine million, forty-nine thousand, eight hundred eighty-three".