8409980 has 12 divisors (see below), whose sum is σ = 17661000. Its totient is φ = 3363984.

The previous prime is 8409941. The next prime is 8410001. The reversal of 8409980 is 899048.

It is an Ulam number.

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, 210230 + ... + 210269.

It is an arithmetic number, because the mean of its divisors is an integer number (1471750).

Almost surely, 2^8409980 is an apocalyptic number.

It is an amenable number.

8409980 is an abundant number, since it is smaller than the sum of its proper divisors (9251020).

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

8409980 is a wasteful number, since it uses less digits than its factorization.

8409980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420508 (or 420506 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 8409980 is about 2899.9965517221. The cubic root of 8409980 is about 203.3597445462.

The spelling of 8409980 in words is "eight million, four hundred nine thousand, nine hundred eighty".