3965629 has 2 divisors, whose sum is σ = 3965630. Its totient is φ = 3965628.

The previous prime is 3965617. The next prime is 3965639. The reversal of 3965629 is 9265693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3892729 + 72900 = 1973^2 + 270^2 .

It is a cyclic number.

It is not a de Polignac number, because 3965629 - 2¹¹ = 3963581 is a prime.

3965629 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3965591 and 3965600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3965639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1982814 + 1982815.

It is an arithmetic number, because the mean of its divisors is an integer number (1982815).

Almost surely, 2^3965629 is an apocalyptic number.

It is an amenable number.

3965629 is a deficient number, since it is larger than the sum of its proper divisors (1).

3965629 is an equidigital number, since it uses as much as digits as its factorization.

3965629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 40.

The square root of 3965629 is about 1991.3887114273. The cubic root of 3965629 is about 158.2841253054.

The spelling of 3965629 in words is "three million, nine hundred sixty-five thousand, six hundred twenty-nine".