129349944 has 24 divisors (see below), whose sum is σ = 350322960. Its totient is φ = 43116624.

The previous prime is 129349937. The next prime is 129350009. The reversal of 129349944 is 449943921.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 129349944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 898192 + ... + 898335.

It is an arithmetic number, because the mean of its divisors is an integer number (14596790).

Almost surely, 2^129349944 is an apocalyptic number.

It is an amenable number.

129349944 is an abundant number, since it is smaller than the sum of its proper divisors (220973016).

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

129349944 is a wasteful number, since it uses less digits than its factorization.

129349944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796539 (or 1796532 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 129349944 is about 11373.2116836011. The cubic root of 129349944 is about 505.7339183361.

The spelling of 129349944 in words is "one hundred twenty-nine million, three hundred forty-nine thousand, nine hundred forty-four".