129097466 has 4 divisors (see below), whose sum is σ = 193646202. Its totient is φ = 64548732.

The previous prime is 129097433. The next prime is 129097471. The reversal of 129097466 is 664790921.

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

It can be written as a sum of positive squares in only one way, i.e., 71656225 + 57441241 = 8465^2 + 7579^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32274365 + ... + 32274368.

Almost surely, 2^129097466 is an apocalyptic number.

129097466 is a deficient number, since it is larger than the sum of its proper divisors (64548736).

129097466 is an equidigital number, since it uses as much as digits as its factorization.

129097466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64548735.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 129097466 is about 11362.1065828481. The cubic root of 129097466 is about 505.4046568725.

The spelling of 129097466 in words is "one hundred twenty-nine million, ninety-seven thousand, four hundred sixty-six".