7799940497 has 4 divisors (see below), whose sum is σ = 7927808436. Its totient is φ = 7672072560.

The previous prime is 7799940469. The next prime is 7799940523. The reversal of 7799940497 is 7940499977.

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 769285696 + 7030654801 = 27736^2 + 83849^2 .

It is a cyclic number.

It is not a de Polignac number, because 7799940497 - 2¹² = 7799936401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7799940397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63933878 + ... + 63933999.

It is an arithmetic number, because the mean of its divisors is an integer number (1981952109).

Almost surely, 2^7799940497 is an apocalyptic number.

It is an amenable number.

7799940497 is a deficient number, since it is larger than the sum of its proper divisors (127867939).

7799940497 is a wasteful number, since it uses less digits than its factorization.

7799940497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127867938.

The product of its (nonzero) digits is 36006768, while the sum is 65.

The square root of 7799940497 is about 88317.2717932342. The cubic root of 7799940497 is about 1983.1874396807.

The spelling of 7799940497 in words is "seven billion, seven hundred ninety-nine million, nine hundred forty thousand, four hundred ninety-seven".