100444129 has 4 divisors (see below), whose sum is σ = 100475584. Its totient is φ = 100412676.

The previous prime is 100444103. The next prime is 100444133. The reversal of 100444129 is 921444001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 921444001 = 5153 ⋅178817.

It is a cyclic number.

It is not a de Polignac number, because 100444129 - 2¹⁵ = 100411361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100444199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10317 + ... + 17530.

It is an arithmetic number, because the mean of its divisors is an integer number (25118896).

Almost surely, 2^100444129 is an apocalyptic number.

It is an amenable number.

100444129 is a deficient number, since it is larger than the sum of its proper divisors (31455).

100444129 is an equidigital number, since it uses as much as digits as its factorization.

100444129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31454.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 100444129 is about 10022.1818482803. The cubic root of 100444129 is about 464.8450233151.

The spelling of 100444129 in words is "one hundred million, four hundred forty-four thousand, one hundred twenty-nine".