129066644 has 12 divisors (see below), whose sum is σ = 258133344. Its totient is φ = 55314264.

The previous prime is 129066599. The next prime is 129066649. The reversal of 129066644 is 446660921.

It is a happy number.

129066644 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 129066598 and 129066607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129066649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2304734 + ... + 2304789.

It is an arithmetic number, because the mean of its divisors is an integer number (21511112).

Almost surely, 2^129066644 is an apocalyptic number.

129066644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

129066644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

129066644 is a wasteful number, since it uses less digits than its factorization.

129066644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4609534 (or 4609532 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 129066644 is about 11360.7501512884. The cubic root of 129066644 is about 505.3644319100.

The spelling of 129066644 in words is "one hundred twenty-nine million, sixty-six thousand, six hundred forty-four".