3995923 has 2 divisors, whose sum is σ = 3995924. Its totient is φ = 3995922.

The previous prime is 3995921. The next prime is 3995933. The reversal of 3995923 is 3295993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3995923 - 2¹ = 3995921 is a prime.

Together with 3995921, it forms a pair of twin primes.

3995923 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3995921) 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, 1997961 + 1997962.

It is an arithmetic number, because the mean of its divisors is an integer number (1997962).

Almost surely, 2^3995923 is an apocalyptic number.

3995923 is the 1069-th centered heptagonal number.

3995923 is a deficient number, since it is larger than the sum of its proper divisors (1).

3995923 is an equidigital number, since it uses as much as digits as its factorization.

3995923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65610, while the sum is 40.

The square root of 3995923 is about 1998.9804901499. The cubic root of 3995923 is about 158.6861549123.

The spelling of 3995923 in words is "three million, nine hundred ninety-five thousand, nine hundred twenty-three".