7988840245 has 4 divisors (see below), whose sum is σ = 9586608300. Its totient is φ = 6391072192.

The previous prime is 7988840231. The next prime is 7988840257. The reversal of 7988840245 is 5420488897.

It is a happy number.

7988840245 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 2998548081 + 4990292164 = 54759^2 + 70642^2 .

It is a cyclic number.

It is not a de Polignac number, because 7988840245 - 2¹³ = 7988832053 is a prime.

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, 798884020 + ... + 798884029.

It is an arithmetic number, because the mean of its divisors is an integer number (2396652075).

Almost surely, 2^7988840245 is an apocalyptic number.

It is an amenable number.

7988840245 is a deficient number, since it is larger than the sum of its proper divisors (1597768055).

7988840245 is a wasteful number, since it uses less digits than its factorization.

7988840245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597768054.

The product of its (nonzero) digits is 5160960, while the sum is 55.

The square root of 7988840245 is about 89380.3124015574. The cubic root of 7988840245 is about 1999.0695876502.

The spelling of 7988840245 in words is "seven billion, nine hundred eighty-eight million, eight hundred forty thousand, two hundred forty-five".