431917448939 has 4 divisors (see below), whose sum is σ = 431919554760. Its totient is φ = 431915343120.

The previous prime is 431917448929. The next prime is 431917448951. The reversal of 431917448939 is 939844719134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939844719134 = 2 ⋅469922359567.

It is a cyclic number.

It is not a de Polignac number, because 431917448939 - 2²⁸ = 431649013483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431917448929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707474 + ... + 1168055.

It is an arithmetic number, because the mean of its divisors is an integer number (107979888690).

Almost surely, 2^431917448939 is an apocalyptic number.

431917448939 is a deficient number, since it is larger than the sum of its proper divisors (2105821).

431917448939 is a wasteful number, since it uses less digits than its factorization.

431917448939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105820.

The product of its digits is 23514624, while the sum is 62.

The spelling of 431917448939 in words is "four hundred thirty-one billion, nine hundred seventeen million, four hundred forty-eight thousand, nine hundred thirty-nine".