4399787125 has 8 divisors (see below), whose sum is σ = 5490934488. Its totient is φ = 3519829600.

The previous prime is 4399787099. The next prime is 4399787129. The reversal of 4399787125 is 5217879934.

It is a happy number.

4399787125 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3301489 + 4396485636 = 1817^2 + 66306^2 .

It is not a de Polignac number, because 4399787125 - 2⁹ = 4399786613 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 (4399787129) 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, 17599024 + ... + 17599273.

It is an arithmetic number, because the mean of its divisors is an integer number (686366811).

Almost surely, 2^4399787125 is an apocalyptic number.

It is an amenable number.

4399787125 is a deficient number, since it is larger than the sum of its proper divisors (1091147363).

4399787125 is an equidigital number, since it uses as much as digits as its factorization.

4399787125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35198312 (or 35198302 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 55.

The square root of 4399787125 is about 66330.8911820126. The cubic root of 4399787125 is about 1638.6161145606.

The spelling of 4399787125 in words is "four billion, three hundred ninety-nine million, seven hundred eighty-seven thousand, one hundred twenty-five".