3938629 has 2 divisors, whose sum is σ = 3938630. Its totient is φ = 3938628.

The previous prime is 3938609. The next prime is 3938633. The reversal of 3938629 is 9268393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2169729 + 1768900 = 1473^2 + 1330^2 .

It is a cyclic number.

It is not a de Polignac number, because 3938629 - 2⁹ = 3938117 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3938591 and 3938600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3938609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1969314 + 1969315.

It is an arithmetic number, because the mean of its divisors is an integer number (1969315).

Almost surely, 2^3938629 is an apocalyptic number.

It is an amenable number.

3938629 is a deficient number, since it is larger than the sum of its proper divisors (1).

3938629 is an equidigital number, since it uses as much as digits as its factorization.

3938629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 40.

The square root of 3938629 is about 1984.5979441690. The cubic root of 3938629 is about 157.9240809224.

The spelling of 3938629 in words is "three million, nine hundred thirty-eight thousand, six hundred twenty-nine".