129444357 has 8 divisors (see below), whose sum is σ = 197248576. Its totient is φ = 73968192.

The previous prime is 129444349. The next prime is 129444361. The reversal of 129444357 is 753444921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129444357 - 2³ = 129444349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129444317) 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, 3081988 + ... + 3082029.

It is an arithmetic number, because the mean of its divisors is an integer number (24656072).

Almost surely, 2^129444357 is an apocalyptic number.

It is an amenable number.

129444357 is a deficient number, since it is larger than the sum of its proper divisors (67804219).

129444357 is an equidigital number, since it uses as much as digits as its factorization.

129444357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6164027.

The product of its digits is 120960, while the sum is 39.

The square root of 129444357 is about 11377.3616010040. The cubic root of 129444357 is about 505.8569340935.

The spelling of 129444357 in words is "one hundred twenty-nine million, four hundred forty-four thousand, three hundred fifty-seven".