129444701 has 4 divisors (see below), whose sum is σ = 136257600. Its totient is φ = 122631804.

The previous prime is 129444691. The next prime is 129444743. The reversal of 129444701 is 107444921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 129444701 - 2²² = 125250397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129444751) 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, 3406421 + ... + 3406458.

It is an arithmetic number, because the mean of its divisors is an integer number (34064400).

Almost surely, 2^129444701 is an apocalyptic number.

It is an amenable number.

129444701 is a deficient number, since it is larger than the sum of its proper divisors (6812899).

129444701 is an equidigital number, since it uses as much as digits as its factorization.

129444701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6812898.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 129444701 is about 11377.3767187344. The cubic root of 129444701 is about 505.8573822002.

The spelling of 129444701 in words is "one hundred twenty-nine million, four hundred forty-four thousand, seven hundred one".