423965519318929 has 27 divisors (see below), whose sum is σ = 493794259046193. Its totient is φ = 362950186518528.

The previous prime is 423965519318923. The next prime is 423965519318963. The reversal of 423965519318929 is 929813915569324.

The square root of 423965519318929 is 20590423.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 81864982997329 + 342100536321600 = 9047927^2 + 18495960^2 .

It is not a de Polignac number, because 423965519318929 - 2³ = 423965519318921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423965519318921) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 175409812329 + ... + 175409814745.

Almost surely, 2^{423965519318929} is an apocalyptic number.

423965519318929 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

423965519318929 is the 20590423-rd square number.

423965519318929 is the 10295212-nd centered octagonal number.

It is an amenable number.

423965519318929 is a deficient number, since it is larger than the sum of its proper divisors (69828739727264).

423965519318929 is an frugal number, since it uses more digits than its factorization.

423965519318929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7282 (or 3641 counting only the distinct ones).

The product of its digits is 1133740800, while the sum is 76.

The spelling of 423965519318929 in words is "four hundred twenty-three trillion, nine hundred sixty-five billion, five hundred nineteen million, three hundred eighteen thousand, nine hundred twenty-nine".