4001629 has 2 divisors, whose sum is σ = 4001630. Its totient is φ = 4001628.

The previous prime is 4001617. The next prime is 4001639. The reversal of 4001629 is 9261004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3892729 + 108900 = 1973^2 + 330^2 .

It is a cyclic number.

It is not a de Polignac number, because 4001629 - 2⁵ = 4001597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4001639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000814 + 2000815.

It is an arithmetic number, because the mean of its divisors is an integer number (2000815).

Almost surely, 2^4001629 is an apocalyptic number.

It is an amenable number.

4001629 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001629 is an equidigital number, since it uses as much as digits as its factorization.

4001629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 4001629 is about 2000.4072085453. The cubic root of 4001629 is about 158.7616512415.

The spelling of 4001629 in words is "four million, one thousand, six hundred twenty-nine".