8240440432 has 40 divisors (see below), whose sum is σ = 18691741152. Its totient is φ = 3445478400.

The previous prime is 8240440421. The next prime is 8240440441. The reversal of 8240440432 is 2340440428.

It is a junction number, because it is equal to n+sod(n) for n = 8240440394 and 8240440403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 892669 + ... + 901852.

Almost surely, 2^8240440432 is an apocalyptic number.

8240440432 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

8240440432 is an abundant number, since it is smaller than the sum of its proper divisors (10451300720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8240440432 is a wasteful number, since it uses less digits than its factorization.

8240440432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794577 (or 1794571 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

The square root of 8240440432 is about 90776.8716799604. The cubic root of 8240440432 is about 2019.8392539472.

The spelling of 8240440432 in words is "eight billion, two hundred forty million, four hundred forty thousand, four hundred thirty-two".