9409890 has 32 divisors (see below), whose sum is σ = 25810560. Its totient is φ = 2150784.

The previous prime is 9409879. The next prime is 9409903. The reversal of 9409890 is 989049.

9409890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22195 + ... + 22614.

It is an arithmetic number, because the mean of its divisors is an integer number (806580).

Almost surely, 2^9409890 is an apocalyptic number.

9409890 is an abundant number, since it is smaller than the sum of its proper divisors (16400670).

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

9409890 is a wasteful number, since it uses less digits than its factorization.

9409890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44826.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 9409890 is about 3067.5544004956. The cubic root of 9409890 is about 211.1194190841.

The spelling of 9409890 in words is "nine million, four hundred nine thousand, eight hundred ninety".