3997567999 has 2 divisors, whose sum is σ = 3997568000. Its totient is φ = 3997567998.

The previous prime is 3997567963. The next prime is 3997568009. The reversal of 3997567999 is 9997657993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3997567999 - 2⁹ = 3997567487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3997567099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998783999 + 1998784000.

It is an arithmetic number, because the mean of its divisors is an integer number (1998784000).

Almost surely, 2^3997567999 is an apocalyptic number.

3997567999 is a deficient number, since it is larger than the sum of its proper divisors (1).

3997567999 is an equidigital number, since it uses as much as digits as its factorization.

3997567999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 260406090, while the sum is 73.

The square root of 3997567999 is about 63226.3236239464. The cubic root of 3997567999 is about 1587.0792733334.

The spelling of 3997567999 in words is "three billion, nine hundred ninety-seven million, five hundred sixty-seven thousand, nine hundred ninety-nine".