4247629 has 2 divisors, whose sum is σ = 4247630. Its totient is φ = 4247628.

The previous prime is 4247623. The next prime is 4247687. The reversal of 4247629 is 9267424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3724900 + 522729 = 1930^2 + 723^2 .

It is a cyclic number.

It is not a de Polignac number, because 4247629 - 2⁵ = 4247597 is a prime.

4247629 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4247594 and 4247603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4247623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2123814 + 2123815.

It is an arithmetic number, because the mean of its divisors is an integer number (2123815).

Almost surely, 2^4247629 is an apocalyptic number.

It is an amenable number.

4247629 is a deficient number, since it is larger than the sum of its proper divisors (1).

4247629 is an equidigital number, since it uses as much as digits as its factorization.

4247629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 4247629 is about 2060.9776806167. The cubic root of 4247629 is about 161.9504624230.

It can be divided in two parts, 424 and 7629, that multiplied together give a triangular number (3234696 = T₂₅₄₃).

The spelling of 4247629 in words is "four million, two hundred forty-seven thousand, six hundred twenty-nine".