4023997 has 2 divisors, whose sum is σ = 4023998. Its totient is φ = 4023996.

The previous prime is 4023973. The next prime is 4024001. The reversal of 4023997 is 7993204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3976036 + 47961 = 1994^2 + 219^2 .

It is a cyclic number.

It is not a de Polignac number, because 4023997 - 2¹¹ = 4021949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4023907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2011998 + 2011999.

It is an arithmetic number, because the mean of its divisors is an integer number (2011999).

Almost surely, 2^4023997 is an apocalyptic number.

It is an amenable number.

4023997 is a deficient number, since it is larger than the sum of its proper divisors (1).

4023997 is an equidigital number, since it uses as much as digits as its factorization.

4023997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 4023997 is about 2005.9902791390. The cubic root of 4023997 is about 159.0569130278.

The spelling of 4023997 in words is "four million, twenty-three thousand, nine hundred ninety-seven".