4418479129 has 4 divisors (see below), whose sum is σ = 4678389684. Its totient is φ = 4158568576.

The previous prime is 4418479123. The next prime is 4418479157. The reversal of 4418479129 is 9219748144.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4037331600 + 381147529 = 63540^2 + 19523^2 .

It is a cyclic number.

It is not a de Polignac number, because 4418479129 - 2⁷ = 4418479001 is a prime.

It is a super-3 number, since 3×4418479129³ (a number of 30 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4418479123) 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, 129955252 + ... + 129955285.

It is an arithmetic number, because the mean of its divisors is an integer number (1169597421).

Almost surely, 2^4418479129 is an apocalyptic number.

It is an amenable number.

4418479129 is a deficient number, since it is larger than the sum of its proper divisors (259910555).

4418479129 is a wasteful number, since it uses less digits than its factorization.

4418479129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259910554.

The product of its digits is 580608, while the sum is 49.

The square root of 4418479129 is about 66471.6415398326. The cubic root of 4418479129 is about 1640.9333286688.

The spelling of 4418479129 in words is "four billion, four hundred eighteen million, four hundred seventy-nine thousand, one hundred twenty-nine".