129977222 has 8 divisors (see below), whose sum is σ = 195350400. Its totient is φ = 64860424.

The previous prime is 129977207. The next prime is 129977227. The reversal of 129977222 is 222779921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 129977222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129977227) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 62822 + ... + 64857.

It is an arithmetic number, because the mean of its divisors is an integer number (24418800).

Almost surely, 2^129977222 is an apocalyptic number.

129977222 is a deficient number, since it is larger than the sum of its proper divisors (65373178).

129977222 is a wasteful number, since it uses less digits than its factorization.

129977222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128190.

The product of its digits is 63504, while the sum is 41.

The square root of 129977222 is about 11400.7553258545. The cubic root of 129977222 is about 506.5501133295.

The spelling of 129977222 in words is "one hundred twenty-nine million, nine hundred seventy-seven thousand, two hundred twenty-two".