129938222 has 4 divisors (see below), whose sum is σ = 194907336. Its totient is φ = 64969110.

The previous prime is 129938219. The next prime is 129938233. The reversal of 129938222 is 222839921.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32484554 + ... + 32484557.

It is an arithmetic number, because the mean of its divisors is an integer number (48726834).

Almost surely, 2^129938222 is an apocalyptic number.

129938222 is a deficient number, since it is larger than the sum of its proper divisors (64969114).

129938222 is an equidigital number, since it uses as much as digits as its factorization.

129938222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64969113.

The product of its digits is 31104, while the sum is 38.

The square root of 129938222 is about 11399.0447845423. The cubic root of 129938222 is about 506.4994443729.

The spelling of 129938222 in words is "one hundred twenty-nine million, nine hundred thirty-eight thousand, two hundred twenty-two".