129622805 has 16 divisors (see below), whose sum is σ = 169639680. Its totient is φ = 94506048.

The previous prime is 129622799. The next prime is 129622847. The reversal of 129622805 is 508226921.

It is a happy number.

It is not a de Polignac number, because 129622805 - 2⁶ = 129622741 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7487 + ... + 17756.

It is an arithmetic number, because the mean of its divisors is an integer number (10602480).

Almost surely, 2^129622805 is an apocalyptic number.

It is an amenable number.

129622805 is a deficient number, since it is larger than the sum of its proper divisors (40016875).

129622805 is a wasteful number, since it uses less digits than its factorization.

129622805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25340.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 129622805 is about 11385.2011400765. The cubic root of 129622805 is about 506.0892802827.

The spelling of 129622805 in words is "one hundred twenty-nine million, six hundred twenty-two thousand, eight hundred five".