629723923 has 16 divisors (see below), whose sum is σ = 670242816. Its totient is φ = 590372640.

The previous prime is 629723909. The next prime is 629723957. The reversal of 629723923 is 329327926.

It is not a de Polignac number, because 629723923 - 2⁵ = 629723891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 629723923.

It is not an unprimeable number, because it can be changed into a prime (629723993) 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 15 ways as a sum of consecutive naturals, for example, 514290 + ... + 515512.

It is an arithmetic number, because the mean of its divisors is an integer number (41890176).

Almost surely, 2^629723923 is an apocalyptic number.

629723923 is a deficient number, since it is larger than the sum of its proper divisors (40518893).

629723923 is a wasteful number, since it uses less digits than its factorization.

629723923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674.

The product of its digits is 244944, while the sum is 43.

The square root of 629723923 is about 25094.3006079070. The cubic root of 629723923 is about 857.1366475595.

The spelling of 629723923 in words is "six hundred twenty-nine million, seven hundred twenty-three thousand, nine hundred twenty-three".