4256629 has 4 divisors (see below), whose sum is σ = 4584076. Its totient is φ = 3929184.

The previous prime is 4256617. The next prime is 4256639. The reversal of 4256629 is 9266524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1703025 + 2553604 = 1305^2 + 1598^2 .

It is a cyclic number.

It is not a de Polignac number, because 4256629 - 2⁷ = 4256501 is a prime.

It is a Duffinian number.

4256629 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4256594 and 4256603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4256639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163704 + ... + 163729.

It is an arithmetic number, because the mean of its divisors is an integer number (1146019).

Almost surely, 2^4256629 is an apocalyptic number.

It is an amenable number.

4256629 is a deficient number, since it is larger than the sum of its proper divisors (327447).

4256629 is a wasteful number, since it uses less digits than its factorization.

4256629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327446.

The product of its digits is 25920, while the sum is 34.

The square root of 4256629 is about 2063.1599550205. The cubic root of 4256629 is about 162.0647635179.

The spelling of 4256629 in words is "four million, two hundred fifty-six thousand, six hundred twenty-nine".