629421898 has 8 divisors (see below), whose sum is σ = 1079008992. Its totient is φ = 269752236.

The previous prime is 629421893. The next prime is 629421899. The reversal of 629421898 is 898124926.

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

It is not an unprimeable number, because it can be changed into a prime (629421893) 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 3 ways as a sum of consecutive naturals, for example, 22479340 + ... + 22479367.

It is an arithmetic number, because the mean of its divisors is an integer number (134876124).

Almost surely, 2^629421898 is an apocalyptic number.

629421898 is a deficient number, since it is larger than the sum of its proper divisors (449587094).

629421898 is a wasteful number, since it uses less digits than its factorization.

629421898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44958716.

The product of its digits is 497664, while the sum is 49.

The square root of 629421898 is about 25088.2820854677. The cubic root of 629421898 is about 856.9995937996. Note that the first 3 decimals are identical.

The spelling of 629421898 in words is "six hundred twenty-nine million, four hundred twenty-one thousand, eight hundred ninety-eight".