8429439231 has 10 divisors (see below), whose sum is σ = 12592125392. Its totient is φ = 5619626100.

The previous prime is 8429439223. The next prime is 8429439233. The reversal of 8429439231 is 1329349248.

It is not a de Polignac number, because 8429439231 - 2³ = 8429439223 is a prime.

It is a super-2 number, since 2×8429439231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8429439233) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 52033495 + ... + 52033656.

Almost surely, 2^8429439231 is an apocalyptic number.

8429439231 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

8429439231 is a deficient number, since it is larger than the sum of its proper divisors (4162686161).

8429439231 is a wasteful number, since it uses less digits than its factorization.

8429439231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104067163 (or 104067154 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 8429439231 is about 91811.9776009645. The cubic root of 8429439231 is about 2035.1647008948.

The spelling of 8429439231 in words is "eight billion, four hundred twenty-nine million, four hundred thirty-nine thousand, two hundred thirty-one".