129684464 has 40 divisors (see below), whose sum is σ = 309251040. Its totient is φ = 51303168.

The previous prime is 129684409. The next prime is 129684469. The reversal of 129684464 is 464486921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129684469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43079 + ... + 45990.

It is an arithmetic number, because the mean of its divisors is an integer number (7731276).

Almost surely, 2^129684464 is an apocalyptic number.

129684464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

129684464 is an abundant number, since it is smaller than the sum of its proper divisors (179566576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129684464 is a wasteful number, since it uses less digits than its factorization.

129684464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89097 (or 89091 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 129684464 is about 11387.9086754329. The cubic root of 129684464 is about 506.1695131100.

The spelling of 129684464 in words is "one hundred twenty-nine million, six hundred eighty-four thousand, four hundred sixty-four".