423139705829 has 4 divisors (see below), whose sum is σ = 430076422380. Its totient is φ = 416202989280.

The previous prime is 423139705801. The next prime is 423139705841. The reversal of 423139705829 is 928507931324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7724652100 + 415415053729 = 87890^2 + 644527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423139705829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423139735829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3468358184 + ... + 3468358305.

It is an arithmetic number, because the mean of its divisors is an integer number (107519105595).

Almost surely, 2^423139705829 is an apocalyptic number.

It is an amenable number.

423139705829 is a deficient number, since it is larger than the sum of its proper divisors (6936716551).

423139705829 is an equidigital number, since it uses as much as digits as its factorization.

423139705829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6936716550.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 423139705829 in words is "four hundred twenty-three billion, one hundred thirty-nine million, seven hundred five thousand, eight hundred twenty-nine".