423939631409 has 8 divisors (see below), whose sum is σ = 513002579328. Its totient is φ = 342001719360.

The previous prime is 423939631399. The next prime is 423939631481. The reversal of 423939631409 is 904136939324.

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

It is not a de Polignac number, because 423939631409 - 2¹⁶ = 423939565873 is a prime.

It is a super-2 number, since 2×423939631409² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423939631909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1781258837 + ... + 1781259074.

It is an arithmetic number, because the mean of its divisors is an integer number (64125322416).

Almost surely, 2^423939631409 is an apocalyptic number.

It is an amenable number.

423939631409 is a deficient number, since it is larger than the sum of its proper divisors (89062947919).

423939631409 is a wasteful number, since it uses less digits than its factorization.

423939631409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562517935.

The product of its (nonzero) digits is 3779136, while the sum is 53.

The spelling of 423939631409 in words is "four hundred twenty-three billion, nine hundred thirty-nine million, six hundred thirty-one thousand, four hundred nine".