4381129 has 4 divisors (see below), whose sum is σ = 4385920. Its totient is φ = 4376340.

The previous prime is 4381127. The next prime is 4381147. The reversal of 4381129 is 9211834.

It is a happy number.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9211834 = 2 ⋅4605917.

It is a cyclic number.

It is not a de Polignac number, because 4381129 - 2¹ = 4381127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4381097 and 4381106.

It is not an unprimeable number, because it can be changed into a prime (4381127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549 + ... + 3010.

It is an arithmetic number, because the mean of its divisors is an integer number (1096480).

Almost surely, 2^4381129 is an apocalyptic number.

It is an amenable number.

4381129 is a deficient number, since it is larger than the sum of its proper divisors (4791).

4381129 is a wasteful number, since it uses less digits than its factorization.

4381129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4790.

The product of its digits is 1728, while the sum is 28.

The square root of 4381129 is about 2093.1146647998. The cubic root of 4381129 is about 163.6296545977.

The spelling of 4381129 in words is "four million, three hundred eighty-one thousand, one hundred twenty-nine".