629251213 has 2 divisors, whose sum is σ = 629251214. Its totient is φ = 629251212.

The previous prime is 629251187. The next prime is 629251279. The reversal of 629251213 is 312152926.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 583850569 + 45400644 = 24163^2 + 6738^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-629251213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (629251013) 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 as a sum of consecutive naturals, namely, 314625606 + 314625607.

It is an arithmetic number, because the mean of its divisors is an integer number (314625607).

Almost surely, 2^629251213 is an apocalyptic number.

It is an amenable number.

629251213 is a deficient number, since it is larger than the sum of its proper divisors (1).

629251213 is an equidigital number, since it uses as much as digits as its factorization.

629251213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 629251213 is about 25084.8801671445. The cubic root of 629251213 is about 856.9221204861.

The spelling of 629251213 in words is "six hundred twenty-nine million, two hundred fifty-one thousand, two hundred thirteen".