129090227 has 8 divisors (see below), whose sum is σ = 147728736. Its totient is φ = 110500992.

The previous prime is 129090211. The next prime is 129090229. The reversal of 129090227 is 722090921.

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

It is not a de Polignac number, because 129090227 - 2⁴ = 129090211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129090193 and 129090202.

It is not an unprimeable number, because it can be changed into a prime (129090229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6518 + ... + 17339.

It is an arithmetic number, because the mean of its divisors is an integer number (18466092).

Almost surely, 2^129090227 is an apocalyptic number.

129090227 is a deficient number, since it is larger than the sum of its proper divisors (18638509).

129090227 is an equidigital number, since it uses as much as digits as its factorization.

129090227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24637.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 129090227 is about 11361.7880194976. The cubic root of 129090227 is about 505.3952100238.

The spelling of 129090227 in words is "one hundred twenty-nine million, ninety thousand, two hundred twenty-seven".