129383452 has 24 divisors (see below), whose sum is σ = 247654512. Its totient is φ = 58656000.

The previous prime is 129383411. The next prime is 129383453. The reversal of 129383452 is 254383921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129383453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13978 + ... + 21310.

It is an arithmetic number, because the mean of its divisors is an integer number (10318938).

Almost surely, 2^129383452 is an apocalyptic number.

It is an amenable number.

129383452 is a deficient number, since it is larger than the sum of its proper divisors (118271060).

129383452 is a wasteful number, since it uses less digits than its factorization.

129383452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7749 (or 7747 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 129383452 is about 11374.6846989268. The cubic root of 129383452 is about 505.7775845553. Note that the first 3 decimals are identical.

The spelling of 129383452 in words is "one hundred twenty-nine million, three hundred eighty-three thousand, four hundred fifty-two".