629248821 has 8 divisors (see below), whose sum is σ = 883156320. Its totient is φ = 397420272.

The previous prime is 629248811. The next prime is 629248847. The reversal of 629248821 is 128842926.

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

It is a de Polignac number, because none of the positive numbers 2^k-629248821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629248801) 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, 5519670 + ... + 5519783.

It is an arithmetic number, because the mean of its divisors is an integer number (110394540).

Almost surely, 2^629248821 is an apocalyptic number.

It is an amenable number.

629248821 is a deficient number, since it is larger than the sum of its proper divisors (253907499).

629248821 is a wasteful number, since it uses less digits than its factorization.

629248821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11039475.

The product of its digits is 110592, while the sum is 42.

The square root of 629248821 is about 25084.8324889763. The cubic root of 629248821 is about 856.9210346663.

The spelling of 629248821 in words is "six hundred twenty-nine million, two hundred forty-eight thousand, eight hundred twenty-one".