3997678423 has 2 divisors, whose sum is σ = 3997678424. Its totient is φ = 3997678422.

The previous prime is 3997678417. The next prime is 3997678427. The reversal of 3997678423 is 3248767993.

It is a strong prime.

It is an emirp because it is prime and its reverse (3248767993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3997678423 - 2⁹ = 3997677911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3997678427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998839211 + 1998839212.

It is an arithmetic number, because the mean of its divisors is an integer number (1998839212).

Almost surely, 2^3997678423 is an apocalyptic number.

3997678423 is a deficient number, since it is larger than the sum of its proper divisors (1).

3997678423 is an equidigital number, since it uses as much as digits as its factorization.

3997678423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 58.

The square root of 3997678423 is about 63227.1968617936. The cubic root of 3997678423 is about 1587.0938863872.

The spelling of 3997678423 in words is "three billion, nine hundred ninety-seven million, six hundred seventy-eight thousand, four hundred twenty-three".