129369466 has 4 divisors (see below), whose sum is σ = 194054202. Its totient is φ = 64684732.

The previous prime is 129369463. The next prime is 129369467. The reversal of 129369466 is 664963921.

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., 72743841 + 56625625 = 8529^2 + 7525^2 .

It is not an unprimeable number, because it can be changed into a prime (129369463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32342365 + ... + 32342368.

Almost surely, 2^129369466 is an apocalyptic number.

129369466 is a deficient number, since it is larger than the sum of its proper divisors (64684736).

129369466 is an equidigital number, since it uses as much as digits as its factorization.

129369466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64684735.

The product of its digits is 419904, while the sum is 46.

The square root of 129369466 is about 11374.0698960399. The cubic root of 129369466 is about 505.7593595039.

The spelling of 129369466 in words is "one hundred twenty-nine million, three hundred sixty-nine thousand, four hundred sixty-six".