4002443245 has 4 divisors (see below), whose sum is σ = 4802931900. Its totient is φ = 3201954592.

The previous prime is 4002443231. The next prime is 4002443261. The reversal of 4002443245 is 5423442004.

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 2585824201 + 1416619044 = 50851^2 + 37638^2 .

It is a cyclic number.

It is not a de Polignac number, because 4002443245 - 2⁹ = 4002442733 is a prime.

It is a super-2 number, since 2×4002443245² = 32039103858892260050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400244320 + ... + 400244329.

It is an arithmetic number, because the mean of its divisors is an integer number (1200732975).

Almost surely, 2^4002443245 is an apocalyptic number.

It is an amenable number.

4002443245 is a deficient number, since it is larger than the sum of its proper divisors (800488655).

4002443245 is an equidigital number, since it uses as much as digits as its factorization.

4002443245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800488654.

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 4002443245 is about 63264.8658024341. The cubic root of 4002443245 is about 1587.7241869926.

Adding to 4002443245 its reverse (5423442004), we get a palindrome (9425885249).

The spelling of 4002443245 in words is "four billion, two million, four hundred forty-three thousand, two hundred forty-five".