8405490436 has 12 divisors (see below), whose sum is σ = 16810980928. Its totient is φ = 3602353032.

The previous prime is 8405490433. The next prime is 8405490437. The reversal of 8405490436 is 6340945048.

It is a happy number.

8405490436 is an admirable number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8405490392 and 8405490401.

It is not an unprimeable number, because it can be changed into a prime (8405490433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150098016 + ... + 150098071.

Almost surely, 2^8405490436 is an apocalyptic number.

It is an amenable number.

8405490436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8405490436 is a wasteful number, since it uses less digits than its factorization.

8405490436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300196098 (or 300196096 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The square root of 8405490436 is about 91681.4617902660. The cubic root of 8405490436 is about 2033.2355107527.

The spelling of 8405490436 in words is "eight billion, four hundred five million, four hundred ninety thousand, four hundred thirty-six".