8419640 has 16 divisors (see below), whose sum is σ = 18944280. Its totient is φ = 3367840.

The previous prime is 8419613. The next prime is 8419651. The reversal of 8419640 is 469148.

8419640 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 8419597 and 8419606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105206 + ... + 105285.

Almost surely, 2^8419640 is an apocalyptic number.

It is an amenable number.

8419640 is an abundant number, since it is smaller than the sum of its proper divisors (10524640).

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

8419640 is a wasteful number, since it uses less digits than its factorization.

8419640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210502 (or 210498 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 8419640 is about 2901.6615929498. The cubic root of 8419640 is about 203.4375768147.

The spelling of 8419640 in words is "eight million, four hundred nineteen thousand, six hundred forty".