7644004899 has 64 divisors (see below), whose sum is σ = 11295083520. Its totient is φ = 4578508800.

The previous prime is 7644004889. The next prime is 7644004909. The reversal of 7644004899 is 9984004467.

7644004899 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 87430²-1.

It is an interprime number because it is at equal distance from previous prime (7644004889) and next prime (7644004909).

It is not a de Polignac number, because 7644004899 - 2⁴ = 7644004883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (7644004889) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39606147 + ... + 39606339.

It is an arithmetic number, because the mean of its divisors is an integer number (176485680).

Almost surely, 2^7644004899 is an apocalyptic number.

7644004899 is a deficient number, since it is larger than the sum of its proper divisors (3651078621).

7644004899 is a wasteful number, since it uses less digits than its factorization.

7644004899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 7644004899 is about 87429.9999942811. Note that the first 5 decimals coincide. The cubic root of 7644004899 is about 1969.8824857968.

The spelling of 7644004899 in words is "seven billion, six hundred forty-four million, four thousand, eight hundred ninety-nine".