7689387899 has 4 divisors (see below), whose sum is σ = 8023709136. Its totient is φ = 7355066664.

The previous prime is 7689387851. The next prime is 7689387911. The reversal of 7689387899 is 9987839867.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7689387899 - 2¹² = 7689383803 is a prime.

It is a super-2 number, since 2×7689387899² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7689387809) 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, 167160584 + ... + 167160629.

It is an arithmetic number, because the mean of its divisors is an integer number (2005927284).

Almost surely, 2^7689387899 is an apocalyptic number.

7689387899 is a deficient number, since it is larger than the sum of its proper divisors (334321237).

7689387899 is a wasteful number, since it uses less digits than its factorization.

7689387899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334321236.

The product of its digits is 329204736, while the sum is 74.

The square root of 7689387899 is about 87689.1549679891. The cubic root of 7689387899 is about 1973.7732401070.

The spelling of 7689387899 in words is "seven billion, six hundred eighty-nine million, three hundred eighty-seven thousand, eight hundred ninety-nine".