629589021 has 8 divisors (see below), whose sum is σ = 851275584. Its totient is φ = 413814240.

The previous prime is 629589019. The next prime is 629589031. The reversal of 629589021 is 120985926.

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

It is not a de Polignac number, because 629589021 - 2¹ = 629589019 is a prime.

It is a super-4 number, since 4×629589021⁴ (a number of 36 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629589031) 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, 1477696 + ... + 1478121.

It is an arithmetic number, because the mean of its divisors is an integer number (106409448).

Almost surely, 2^629589021 is an apocalyptic number.

It is an amenable number.

629589021 is a deficient number, since it is larger than the sum of its proper divisors (221686563).

629589021 is a wasteful number, since it uses less digits than its factorization.

629589021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2955891.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 629589021 is about 25091.6125627669. The cubic root of 629589021 is about 857.0754367645.

The spelling of 629589021 in words is "six hundred twenty-nine million, five hundred eighty-nine thousand, twenty-one".