629431441 has 2 divisors, whose sum is σ = 629431442. Its totient is φ = 629431440.

The previous prime is 629431427. The next prime is 629431447. The reversal of 629431441 is 144134926.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354004225 + 275427216 = 18815^2 + 16596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-629431441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 629431397 and 629431406.

It is not a weakly prime, because it can be changed into another prime (629431447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314715720 + 314715721.

It is an arithmetic number, because the mean of its divisors is an integer number (314715721).

Almost surely, 2^629431441 is an apocalyptic number.

It is an amenable number.

629431441 is a deficient number, since it is larger than the sum of its proper divisors (1).

629431441 is an equidigital number, since it uses as much as digits as its factorization.

629431441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 629431441 is about 25088.4722731377. The cubic root of 629431441 is about 857.0039249199.

The spelling of 629431441 in words is "six hundred twenty-nine million, four hundred thirty-one thousand, four hundred forty-one".