423435679639 has 16 divisors (see below), whose sum is σ = 491510889216. Its totient is φ = 357264547200.

The previous prime is 423435679633. The next prime is 423435679679. The reversal of 423435679639 is 936976534324.

It is a cyclic number.

It is not a de Polignac number, because 423435679639 - 2³ = 423435679631 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 (423435679631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306624 + ... + 969994.

It is an arithmetic number, because the mean of its divisors is an integer number (30719430576).

Almost surely, 2^423435679639 is an apocalyptic number.

423435679639 is a deficient number, since it is larger than the sum of its proper divisors (68075209577).

423435679639 is a wasteful number, since it uses less digits than its factorization.

423435679639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664806.

The product of its digits is 88179840, while the sum is 61.

The spelling of 423435679639 in words is "four hundred twenty-three billion, four hundred thirty-five million, six hundred seventy-nine thousand, six hundred thirty-nine".