4251629 has 2 divisors, whose sum is σ = 4251630. Its totient is φ = 4251628.

The previous prime is 4251623. The next prime is 4251631. The reversal of 4251629 is 9261524.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2319529 + 1932100 = 1523^2 + 1390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4251629 is a prime.

Together with 4251631, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4251623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2125814 + 2125815.

It is an arithmetic number, because the mean of its divisors is an integer number (2125815).

Almost surely, 2^4251629 is an apocalyptic number.

It is an amenable number.

4251629 is a deficient number, since it is larger than the sum of its proper divisors (1).

4251629 is an equidigital number, since it uses as much as digits as its factorization.

4251629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 4251629 is about 2061.9478654903. The cubic root of 4251629 is about 162.0012828227.

The spelling of 4251629 in words is "four million, two hundred fifty-one thousand, six hundred twenty-nine".