129450445 has 8 divisors (see below), whose sum is σ = 155546136. Its totient is φ = 103423296.

The previous prime is 129450443. The next prime is 129450487. The reversal of 129450445 is 544054921.

It can be written as a sum of positive squares in 4 ways, for example, as 23319241 + 106131204 = 4829^2 + 10302^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 129450445 - 2¹ = 129450443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129450445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129450443) 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, 12882 + ... + 20611.

It is an arithmetic number, because the mean of its divisors is an integer number (19443267).

Almost surely, 2^129450445 is an apocalyptic number.

It is an amenable number.

129450445 is a deficient number, since it is larger than the sum of its proper divisors (26095691).

129450445 is an equidigital number, since it uses as much as digits as its factorization.

129450445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34271.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 129450445 is about 11377.6291467071. The cubic root of 129450445 is about 505.8648644218.

The spelling of 129450445 in words is "one hundred twenty-nine million, four hundred fifty thousand, four hundred forty-five".