4020629 has 4 divisors (see below), whose sum is σ = 4114176. Its totient is φ = 3927084.

The previous prime is 4020623. The next prime is 4020631. The reversal of 4020629 is 9260204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46709 + ... + 46794.

It is an arithmetic number, because the mean of its divisors is an integer number (1028544).

Almost surely, 2^4020629 is an apocalyptic number.

It is an amenable number.

4020629 is a deficient number, since it is larger than the sum of its proper divisors (93547).

4020629 is an equidigital number, since it uses as much as digits as its factorization.

4020629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93546.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 4020629 is about 2005.1506177841. The cubic root of 4020629 is about 159.0125248892.

The spelling of 4020629 in words is "four million, twenty thousand, six hundred twenty-nine".