7899440201 has 4 divisors (see below), whose sum is σ = 8364113172. Its totient is φ = 7434767232.

The previous prime is 7899440177. The next prime is 7899440221. The reversal of 7899440201 is 1020449987.

7899440201 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3366784576 + 4532655625 = 58024^2 + 67325^2 .

It is a cyclic number.

It is not a de Polignac number, because 7899440201 - 2²⁶ = 7832331337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7899440221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232336460 + ... + 232336493.

It is an arithmetic number, because the mean of its divisors is an integer number (2091028293).

Almost surely, 2^7899440201 is an apocalyptic number.

It is an amenable number.

7899440201 is a deficient number, since it is larger than the sum of its proper divisors (464672971).

7899440201 is a wasteful number, since it uses less digits than its factorization.

7899440201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464672970.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 7899440201 is about 88878.7950019576. The cubic root of 7899440201 is about 1991.5846574177.

The spelling of 7899440201 in words is "seven billion, eight hundred ninety-nine million, four hundred forty thousand, two hundred one".