3997668959 has 8 divisors (see below), whose sum is σ = 4175304720. Its totient is φ = 3823695936.

The previous prime is 3997668943. The next prime is 3997668991. The reversal of 3997668959 is 9598667993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3997668959 - 2⁴ = 3997668943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3997668892 and 3997668901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3997668919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 913454 + ... + 917819.

It is an arithmetic number, because the mean of its divisors is an integer number (521913090).

Almost surely, 2^3997668959 is an apocalyptic number.

3997668959 is a deficient number, since it is larger than the sum of its proper divisors (177635761).

3997668959 is a wasteful number, since it uses less digits than its factorization.

3997668959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831369.

The product of its digits is 198404640, while the sum is 71.

The square root of 3997668959 is about 63227.1220205380. The cubic root of 3997668959 is about 1587.0926339712.

The spelling of 3997668959 in words is "three billion, nine hundred ninety-seven million, six hundred sixty-eight thousand, nine hundred fifty-nine".