4390323121 has 8 divisors (see below), whose sum is σ = 4430671560. Its totient is φ = 4350001152.

The previous prime is 4390323061. The next prime is 4390323181. The reversal of 4390323121 is 1213230934.

4390323121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4390323061) and next prime (4390323181).

It can be written as a sum of positive squares in 4 ways, for example, as 844716096 + 3545607025 = 29064^2 + 59545^2 .

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 4390323121 - 2¹¹ = 4390321073 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 4390323121.

It is not an unprimeable number, because it can be changed into a prime (4390323181) 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, 505665 + ... + 514273.

It is an arithmetic number, because the mean of its divisors is an integer number (553833945).

Almost surely, 2^4390323121 is an apocalyptic number.

It is an amenable number.

4390323121 is a deficient number, since it is larger than the sum of its proper divisors (40348439).

4390323121 is a wasteful number, since it uses less digits than its factorization.

4390323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13235.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 4390323121 is about 66259.5134376944. The cubic root of 4390323121 is about 1637.4403757091.

The spelling of 4390323121 in words is "four billion, three hundred ninety million, three hundred twenty-three thousand, one hundred twenty-one".