129089407 has 2 divisors, whose sum is σ = 129089408. Its totient is φ = 129089406.

The previous prime is 129089377. The next prime is 129089459. The reversal of 129089407 is 704980921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129089407 - 2¹⁹ = 128565119 is a prime.

It is a super-2 number, since 2×129089407² = 33328149999223298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129089407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129089507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64544703 + 64544704.

It is an arithmetic number, because the mean of its divisors is an integer number (64544704).

Almost surely, 2^129089407 is an apocalyptic number.

129089407 is a deficient number, since it is larger than the sum of its proper divisors (1).

129089407 is an equidigital number, since it uses as much as digits as its factorization.

129089407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 129089407 is about 11361.7519335708. The cubic root of 129089407 is about 505.3941399068.

The spelling of 129089407 in words is "one hundred twenty-nine million, eighty-nine thousand, four hundred seven".