129227407 has 2 divisors, whose sum is σ = 129227408. Its totient is φ = 129227406.

The previous prime is 129227381. The next prime is 129227419. The reversal of 129227407 is 704722921.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129227407 - 2⁷ = 129227279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129227107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64613703 + 64613704.

It is an arithmetic number, because the mean of its divisors is an integer number (64613704).

Almost surely, 2^129227407 is an apocalyptic number.

129227407 is a deficient number, since it is larger than the sum of its proper divisors (1).

129227407 is an equidigital number, since it uses as much as digits as its factorization.

129227407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 129227407 is about 11367.8233184722. The cubic root of 129227407 is about 505.5741690169.

The spelling of 129227407 in words is "one hundred twenty-nine million, two hundred twenty-seven thousand, four hundred seven".