402006629 has 2 divisors, whose sum is σ = 402006630. Its totient is φ = 402006628.

The previous prime is 402006593. The next prime is 402006659. The reversal of 402006629 is 926600204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395930404 + 6076225 = 19898^2 + 2465^2 .

It is a cyclic number.

It is not a de Polignac number, because 402006629 - 2⁸ = 402006373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402006659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201003314 + 201003315.

It is an arithmetic number, because the mean of its divisors is an integer number (201003315).

Almost surely, 2^402006629 is an apocalyptic number.

It is an amenable number.

402006629 is a deficient number, since it is larger than the sum of its proper divisors (1).

402006629 is an equidigital number, since it uses as much as digits as its factorization.

402006629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 402006629 is about 20050.1029673167. The cubic root of 402006629 is about 738.0363259171.

The spelling of 402006629 in words is "four hundred two million, six thousand, six hundred twenty-nine".