629740947 has 8 divisors (see below), whose sum is σ = 915986880. Its totient is φ = 381661160.

The previous prime is 629740919. The next prime is 629740963. The reversal of 629740947 is 749047926.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 629740947 - 2¹¹ = 629738899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 629740896 and 629740905.

It is not an unprimeable number, because it can be changed into a prime (629740907) 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 in 7 ways as a sum of consecutive naturals, for example, 9541497 + ... + 9541562.

It is an arithmetic number, because the mean of its divisors is an integer number (114498360).

Almost surely, 2^629740947 is an apocalyptic number.

629740947 is a deficient number, since it is larger than the sum of its proper divisors (286245933).

629740947 is a wasteful number, since it uses less digits than its factorization.

629740947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19083073.

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 629740947 is about 25094.6398061419. The cubic root of 629740947 is about 857.1443714537.

The spelling of 629740947 in words is "six hundred twenty-nine million, seven hundred forty thousand, nine hundred forty-seven".