3945937 has 2 divisors, whose sum is σ = 3945938. Its totient is φ = 3945936.

The previous prime is 3945923. The next prime is 3945973. The reversal of 3945937 is 7395493.

Together with next prime (3945973) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3041536 + 904401 = 1744^2 + 951^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3945937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3945937.

It is not a weakly prime, because it can be changed into another prime (3945917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1972968 + 1972969.

It is an arithmetic number, because the mean of its divisors is an integer number (1972969).

Almost surely, 2^3945937 is an apocalyptic number.

It is an amenable number.

3945937 is a deficient number, since it is larger than the sum of its proper divisors (1).

3945937 is an equidigital number, since it uses as much as digits as its factorization.

3945937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 40.

The square root of 3945937 is about 1986.4382698690. The cubic root of 3945937 is about 158.0216949326.

The spelling of 3945937 in words is "three million, nine hundred forty-five thousand, nine hundred thirty-seven".