8478890 has 32 divisors (see below), whose sum is σ = 17746560. Its totient is φ = 2856384.

The previous prime is 8478889. The next prime is 8478893. The reversal of 8478890 is 988748.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8478893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3104 + ... + 5156.

It is an arithmetic number, because the mean of its divisors is an integer number (554580).

Almost surely, 2^8478890 is an apocalyptic number.

8478890 is an abundant number, since it is smaller than the sum of its proper divisors (9267670).

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

8478890 is a wasteful number, since it uses less digits than its factorization.

8478890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 8478890 is about 2911.8533616925. The cubic root of 8478890 is about 203.9136665315.

The spelling of 8478890 in words is "eight million, four hundred seventy-eight thousand, eight hundred ninety".