629841391 has 2 divisors, whose sum is σ = 629841392. Its totient is φ = 629841390.

The previous prime is 629841337. The next prime is 629841403. The reversal of 629841391 is 193148926.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 629841391 - 2¹³ = 629833199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (629841301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314920695 + 314920696.

It is an arithmetic number, because the mean of its divisors is an integer number (314920696).

Almost surely, 2^629841391 is an apocalyptic number.

629841391 is a deficient number, since it is larger than the sum of its proper divisors (1).

629841391 is an equidigital number, since it uses as much as digits as its factorization.

629841391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 43.

The square root of 629841391 is about 25096.6410302255. The cubic root of 629841391 is about 857.1899406848.

The spelling of 629841391 in words is "six hundred twenty-nine million, eight hundred forty-one thousand, three hundred ninety-one".