7969999697 has 4 divisors (see below), whose sum is σ = 8694545136. Its totient is φ = 7245454260.

The previous prime is 7969999691. The next prime is 7969999747.

It is a happy number.

7969999697 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7969999697 - 2⁶ = 7969999633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7969999691) 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, 362272703 + ... + 362272724.

It is an arithmetic number, because the mean of its divisors is an integer number (2173636284).

Almost surely, 2^7969999697 is an apocalyptic number.

It is an amenable number.

7969999697 is a deficient number, since it is larger than the sum of its proper divisors (724545439).

7969999697 is a wasteful number, since it uses less digits than its factorization.

7969999697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724545438.

The product of its digits is 937461924, while the sum is 80.

The square root of 7969999697 is about 89274.8547856562. The cubic root of 7969999697 is about 1997.4968431599.

The spelling of 7969999697 in words is "seven billion, nine hundred sixty-nine million, nine hundred ninety-nine thousand, six hundred ninety-seven".