9487890 has 48 divisors (see below), whose sum is σ = 25204608. Its totient is φ = 2475168.

The previous prime is 9487871. The next prime is 9487913. The reversal of 9487890 is 987849.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3109 + ... + 5351.

It is an arithmetic number, because the mean of its divisors is an integer number (525096).

Almost surely, 2^9487890 is an apocalyptic number.

9487890 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9487890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12602304).

9487890 is an abundant number, since it is smaller than the sum of its proper divisors (15716718).

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

9487890 is a wasteful number, since it uses less digits than its factorization.

9487890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303 (or 2300 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 9487890 is about 3080.2418736197. The cubic root of 9487890 is about 211.7011482737.

The spelling of 9487890 in words is "nine million, four hundred eighty-seven thousand, eight hundred ninety".