629212139 has 2 divisors, whose sum is σ = 629212140. Its totient is φ = 629212138.

The previous prime is 629212099. The next prime is 629212147. The reversal of 629212139 is 931212926.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 629212139 - 2²⁸ = 360776683 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 629212099 and 629212108.

It is not a weakly prime, because it can be changed into another prime (629212439) 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, 314606069 + 314606070.

It is an arithmetic number, because the mean of its divisors is an integer number (314606070).

Almost surely, 2^629212139 is an apocalyptic number.

629212139 is a deficient number, since it is larger than the sum of its proper divisors (1).

629212139 is an equidigital number, since it uses as much as digits as its factorization.

629212139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 629212139 is about 25084.1013193616. The cubic root of 629212139 is about 856.9043829661.

The spelling of 629212139 in words is "six hundred twenty-nine million, two hundred twelve thousand, one hundred thirty-nine".