3997246723 has 2 divisors, whose sum is σ = 3997246724. Its totient is φ = 3997246722.

The previous prime is 3997246711. The next prime is 3997246727. The reversal of 3997246723 is 3276427993.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3997246723 is a prime.

It is not a weakly prime, because it can be changed into another prime (3997246727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998623361 + 1998623362.

It is an arithmetic number, because the mean of its divisors is an integer number (1998623362).

Almost surely, 2^3997246723 is an apocalyptic number.

3997246723 is a deficient number, since it is larger than the sum of its proper divisors (1).

3997246723 is an equidigital number, since it uses as much as digits as its factorization.

3997246723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 52.

The square root of 3997246723 is about 63223.7828906180. The cubic root of 3997246723 is about 1587.0367554708.

The spelling of 3997246723 in words is "three billion, nine hundred ninety-seven million, two hundred forty-six thousand, seven hundred twenty-three".