3923897 has 2 divisors, whose sum is σ = 3923898. Its totient is φ = 3923896.

The previous prime is 3923893. The next prime is 3923911. The reversal of 3923897 is 7983293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3904576 + 19321 = 1976^2 + 139^2 .

It is a cyclic number.

It is not a de Polignac number, because 3923897 - 2² = 3923893 is a prime.

It is not a weakly prime, because it can be changed into another prime (3923893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1961948 + 1961949.

It is an arithmetic number, because the mean of its divisors is an integer number (1961949).

Almost surely, 2^3923897 is an apocalyptic number.

It is an amenable number.

3923897 is a deficient number, since it is larger than the sum of its proper divisors (1).

3923897 is an equidigital number, since it uses as much as digits as its factorization.

3923897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 3923897 is about 1980.8828839687. The cubic root of 3923897 is about 157.7269358143.

The spelling of 3923897 in words is "three million, nine hundred twenty-three thousand, eight hundred ninety-seven".