129909622 has 16 divisors (see below), whose sum is σ = 202783680. Its totient is φ = 62366472.

The previous prime is 129909613. The next prime is 129909641. The reversal of 129909622 is 226909921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7728 + ... + 17875.

It is an arithmetic number, because the mean of its divisors is an integer number (12673980).

Almost surely, 2^129909622 is an apocalyptic number.

129909622 is a deficient number, since it is larger than the sum of its proper divisors (72874058).

129909622 is a wasteful number, since it uses less digits than its factorization.

129909622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25707.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 129909622 is about 11397.7902244251. The cubic root of 129909622 is about 506.4622806941.

The spelling of 129909622 in words is "one hundred twenty-nine million, nine hundred nine thousand, six hundred twenty-two".